CARTA Glossary
| Word | Definition | Related Vocabulary |
|---|---|---|
| Jebel Irhoud hominins |
The oldest known “early” human fossils discovered, dating to roughly 300,000 years ago from an archaeological site in Morocco. The location of this discovery suggests a “pan-African” origin of humans, with a dispersed interbreeding population, likely aided by climactic factors. |
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| John Ssebunya of Uganda |
In 1989, at age 4-5, he witnessed his father murder his mother and subsequently fled into the Ugandan jungle. He was accepted as a peripheral member of a group of vervet monkeys who cared for and nourished him for a period of two years. He was found and captured in 1991. |
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| Ju/’hoansi |
An indigenous population of San people in northeastern Namibia and northwestern Kalahari desert region of Botswana. |
San People |
| Kabwe skull (Broken Hill skull) |
A fossilized human cranium dated to approximately 300,000–125,000 years ago, that was discovered in 1921 in Kabwe (formerly Broken Hill), Zambia. It is classified as Homo heidelbergensis or sometimes as an archaic Homo sapiens. The skull has a large braincase of about 1,230 cubic centimeters but also retains robust features, such as a prominent brow ridge, broad face, and thick cranial bones. The Kabwe Skull may represent a transitional form between Homo erectus and later anatomically modern humans. |
"Archaic" Homo sapiens, Anatomically "Modern" Humans, Homo erectus, Homo heidelbergensis |
| Kalambo Falls, Zambia |
An important archaeological site in Africa with a sequence of human activity over 250,000 years. Kalambo Falls is located in northeastern Zambia, along the border with Tanzania. |
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| Karyotype |
Chromosome number in the cell nucleus. |
Diploid, Haploid |
| Kazakh steppe |
A vast semi-arid grassland region in Central Asia, covering much of northern and central Kazakhstan and extending into parts of Russia, Uzbekistan, and China. It is part of the larger Eurasian Steppe, a continuous belt of grasslands stretching from Eastern Europe to Mongolia. |
Eurasian Steppe |
| KDM8 |
A gene that encodes a lysine demethylase enzyme and plays a crucial role in epigenetic regulation via histone demethylation, influencing gene expression, chromatin structure, and cellular function. Studies have shown a role in tumor suppression. |
Chromatin, Epigenetic regulation, Gene, Gene expression, Histones |
| Kessler Syndrome |
A state in which the accumulation of space-debris in low Earth orbit causes a cascade of collisions with space vehicles and other orbital objects (satellites) results in more space debris, rendering parts of space unusable for human purposes. Proposed by Donald J. Kessler in 1978. |
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| Khoisan (or Khoe-Sān) |
A collective term for non-Bantu indigenous people of South Africa, as well as for the related languages they speak. |
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| Kinematics |
A description of the motion of objects; how the limbs and joints, or combinations of these bodies, move during a particular type of locomotion. |
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| Kinetics |
A description of the forces acting on a body; the forces the body exerts (or resists) during locomotion. |
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| Klasies-River |
A river and cave system in the Tsitsikamma coast, Humansdorp district, Eastern Cape Province, South Africa. Evidence for middle stone age-associated human habitation has been found in the nearby cave system dating to ~125 kya. |
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| Konso-Gardula |
A palaeoanthropological area in the southern Main Ethiopian Rift that was discovered 1991 The Konso-Gardula sediments span ~ 1.9 mya to 1.3 mya. Early Homo fossils and Acheulean stone tools have been found here. |
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| KYA |
Thousand years ago. |
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| Labia stretching |
The lengthening of the inner or outer labia through a regimen of pulling and stretching, often with herbs. Formerly included in the World Health Organization (WHO) typology of female genital modifications. Also known as “labia minora elongation,” or LME. |
Female Genital Modification (FGM), Stretching |
| Labiaplasty |
A plastic surgery to cut and remove part of the genital labia, often to reduce the inner labia so they are contained behind the outer labia. |
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| Lactation |
The process of producing and secreting milk from the mammary glands. |
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| Lactobacillus |
A genus of Gram-positive, rod-shaped bacteria that convert sugars to lactic acid. In humans, they are a significant component of the microbiome and can survive in the harsh pH conditions of the digestive and genital systems. Lactobacillus species are normally a major part of the vaginal microbiota. While receiving nutrients from their human host, Lactobacilli protect the host against certain pathogens, even helping to treat diarrhea, vaginal infections, and skin disorders such as eczema. Lactobacillus is also utilized for many traditional food fermentations and as a probiotic, perhaps most notable for its use in yogurt. |
Bacteria, Genus, Gram-Negative and Gram-Positive Staining, Infection, Microbiome, Pathogen, Species, Vaginal Microbiome |
| Lactobacillus crispatus |
A common genus of beneficial Lactobacillus bacteria that produces hydrogen peroxide (H202) and is found in the vagina and gastrointestinal system. |
Bacteria, Genus |
| Lactobacillus iners |
A common genus of beneficial Lactobacillus bacteria that normally inhabits the lower reproductive system and vagina of healthy women. |
Bacteria, Genus |
| Language (human) |
A structured system of communication that is generative (combine words/symbols to convey an infinite number of ideas), recursive (builds upon itself without limit), and has displaced reference (describe things not present). |
Displaced reference, Recursion (Language) |
| Large language models (LLMs) |
Machine learning algorithms that can recognize, summarize, translate, predict, and generate human languages on the basis of very large text-based datasets. |
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| Large quantity discrimination (LQD) |
The rough discrimination of collections of discrete items above the subitizing range, whose numerosities usually differ by a substantial amount. |
Numerosity, Subitizing |
| Last Glacial Maximum (LGM) |
The Last Glacial Maximum occurred about 20,000 years ago (or more specifically between 24,000 and 18,000 years BP) during the last phase of the Pleistocene Epoch, when the global sea level was some 125 meters lower than it is today, due to the sea water being locked up as glaciers and ice sheets, and having reached their maximum total mass during the last ice age. The climate was much colder and drier. |
Before present (BP), Pleistocene |
| Late Bloomers |
Individuals from high-risk backgrounds who begin to manifest resilience later in adolescence or adulthood following a period of maladjustment or problems. |
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| Late-night wake therapy (LWT) |
A sleep schedule therapy hypothesized to relieve peripartum depression by altering melatonin and sleep timing (sleep from 9:00 pm - 01:00 am). |
Peripartum depression |
| Lectin |
A protein that can bind to a glycan without catalyzing a modification of the glycan. |
Glycans, Protein |
| Left anterior temporal degeneration |
The progressive atrophy (shrinkage and loss of neurons) of the front (anterior) part of the left temporal lobe of the brain. |
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| Legumes |
Plants in the Fabaceae family that include beans, peas, chickpeas, peanuts, lentils, alfalfa, and clover, to name a few. Many legumes have a symbiotic association with nitrogen-fixing bacteria. They also tend to have large, protein-rich seeds. |
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| Levallois Technique (prepared core) |
A method of creating stone tools by first striking flakes off the stone, or core, along the edges to create the prepared core and then striking the prepared core in such a way that the intended tool is flaked off with all of its edges pre-sharpened. |
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| Lexeme |
A basic unit of lexical meaning core to set of related words (play, plays, playing, played, player, with play as the lexeme). |
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| Lexical semantics |
The subfield of linguistic semantics that studies how individual words convey meaning, the relationship between those meanings, and how the lexicon is structured in the mind. |
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| Lexicon (Linguistics) |
The vocabulary of a person, language, or branch of knowledge. |
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| Lies |
Untrue stories the teller wants the listener to believe. |
Story |
| Life History |
The schedule of life, including birth to sexual maturity, duration of the reproductive period, duration of the post-reproductive period (if there is one), and mortality rate at each stage. |
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| Life-history theory |
An evolutionary framework for understanding the timing of developmental milestones and life stages. |
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| Ligand |
A molecule specifically recognized by another molecule and involved in specific interactions. |
Molecule |
| Limbic system |
Structures of the brain that deal with emotions and memory. |
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| Limited Bedding and Nesting |
A paradigm used in the laboratory to model scarcity of resources. Mothers (rats/mice) are not given enough nesting materials to build a nest for their infants and neglect/maltreatment occurs as a result. |
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| Limiting nutrient |
A chemical compound that causes a plant to grow faster when it is added. Biologically available nitrogen is a limiting nutrient for plants in almost all terrestrial ecosystems that have been studied. Other soil nutrients that are limiting include calcium, phosphate, magnesium and potassium. |
Biologically available nitrogen |
| LINE1 Retrotransposons |
Long interspersed nuclear elements class 1 (LINE1) is a type of transposable element, or “jumping gene,” that randomly copies and inserts itself into different genomic locations through reverse transcription (conversion of RNA into DNA). These active LINE1s can interrupt the genome through insertions, deletions, rearrangements, and copy number variations. LINE1 activity has contributed to the instability and evolution of genomes. As such, they are tightly regulated in the germline, however, they are controlled differently in apes and humans. LINE1 retrotransposons make up to ~17% of the human genome. While the majority are inactive in the human genome, there are roughly 80-100 that have retained the ability to retrotranspose with considerable variation between individuals. |
Copy number variation (CNV), Deoxyribonucleic acid (DNA), Genome, Ribonucleic acid (RNA), Transposable elements (TE) |
| Linguistics |
The scientific study of human language. |
|
| Linkage Disequilibrium |
Non-random inheritance of alleles at different loci (due to low recombination). |
Recombination |
| Lipids |
One of the four classes of major biomolecules. The overall name for DNA and RNA, which are composed of nucleotides. DNA is double-stranded and more stable while RNA is single-stranded and less stable. |
Deoxyribonucleic acid (DNA), Nucleotides, Ribonucleic acid (RNA) |
| Locomotion |
Movement causing a person or animal to get from point A to point B. |
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| Locus |
A unique physical position on a chromosome. |
Chromosome |
| Lomekwian Technology |
The oldest known stone tools consisting of 150 artifacts found in Lomekwi, Kenya, close to Lake Turkana. ~3.3 mya. |
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| Long-read sequencing |
A DNA sequencing technology that generates reads that are typically longer than 10 kbp in length. To be distinguished from short read sequencing technology (eg. Illumina), which is typically 100-250 bp in length. |
Deoxyribonucleic acid (DNA) |
| Longevity |
Typical length of life. |
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| Love |
A complex physiological and psychological phenomenon driven by a combination of hormonal, neural, and biochemical processes. These processes involve several key brain regions and chemicals that influence attraction, bonding, and attachment between individuals. Love as a social concept is dependent on a variety of cultural, societal, and interpersonal dynamics. |
Hormone |
| Lower Paleolithic |
The first subdivision of the Paleolithic, or Stone Age. ~3.4 mya- 300 ky. |
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| Lunate sulcus (brain) |
A prominent groove on the lateral surface of the occipital lobe that marks the anterior boundary of the primary visual cortex; its posterior displacement in human evolution is often cited as evidence for the expansion of parietal association areas. |
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| Luteal phase |
The part of the menstrual cycle between ovulation and menstruation. |
Menstrual cycle, Ovulation |
| Lymphatic vessels |
Thin-walled vessels (tubes) of the lymphatic system that are complementary to the cardiovascular system and are devoted to the movement of lymphatic fluid. |
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| Macronutrient |
A substance required in relatively large amounts by living organisms: Fats, proteins, carbohydrates in an animal diet or chemical elements such as potassium, magnesium, calcium as required by plants. |
Carbohydrate, Protein |
| Macrophages |
Specialized immune cells involved in the detection, phagocytosis and destruction of bacteria and other harmful organisms. In addition, they can also present antigens to T cells and initiate inflammation by releasing molecules. |
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| Maguey plant (Agave americana) |
A flowering plant of the Asparagaceae family that is native to Mexico and the United States (Texas). It is commonly used for ornamentation in arid climates due to its drought tolerance, in cuisine and distilling (tequila), as medicine, and to make ropes, nets, bags, cloth, and paper. |
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| Maintenance and Defense |
An organism’s way of maintaining its body and physiological homeostasis while also defending against parasites, pathogens, and internal crises (e.g. cancer). |
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| Major depression (clinical depression) |
A severe and persistent low mood, profound sadness, or a sense of despair lasting at least two weeks but usually much longer. |
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| Major histocompatibility complex (MHC) |
A set of closely linked polymorphic genes that code for cell surface proteins (MHC molecules) that assist the adaptive immune system in detection of foreign molecules. |
Gene, Immune system, Molecule, Protein |
| Maladaptation |
A genotypic or phenotypic trait that is (or has become) more harmful than helpful in determining survival and reproductive success (in contrast to an adaptation, which is more helpful than harmful). |
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| Malaria |
An infectious disease that affects humans and other animals and caused by single-celled organisms belonging to genus Plasmodium and transmitted by mosquitos (commonly female Anopheles mosquitos). Initial symptoms are flu- |
Anopheles Mosquitos, Genome, Hemoglobin, Infectious disease, Jaundice, Plasmodium, Sickle Cell Trait |
| Malignant neoplasm |
A cancerous growth capable of invading normal tissues and growing in otherwise hostile environments. |
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| Malnourished | A condition resulting from inadequate, excessive, or imbalanced intake or absorption of energy and nutrients, leading to impaired physical or physiological function. Malnutrition can include undernutrition, deficiencies of specific nutrients, and, in some contexts, excess intake that contributes to overweight or diet-related disease. | |
| Malnutrition |
A condition resulting from deficiencies, excesses, or imbalances in a person’s intake or absorption of energy and nutrients. It encompasses undernutrition, micronutrient deficiencies, and overweight or obesity associated with an unhealthy diet. |
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| Mammals |
A vertebrate animal belonging to the class Mammalia, characterized by hair or fur, three middle-ear bones, and mammary glands that produce milk to nourish offspring. Most mammals are warm-blooded, breathe air with lungs, and give birth to live young, although there are exceptions such as the egg-laying monotremes. |
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| Marine isotope stage 5 (MIS 5) |
The geologic temperature record between 130,000-80,000 years ago. |
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| Marrow |
The soft fatty substance in the cavities of bones that produces red blood cells and white blood cells and platelets. |
Erythrocytes (red blood cells - RBCs) |
| Mass extinction |
The widespread and rapid loss of biodiversity. Five mass extinctions have been documented and human activity is causing the sixth. |
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| Massively parallel reporter assays (MPRAs) |
High through-put experimental techniques used to study the regulatory activity of thousands of DNA sequences simultaneously. |
DNA sequence |
| Mate guarding (humans) |
The retention of exclusive reproductive access to a mate by attempting to restrict the access of others and discouraging the mate from seeking other sexual opportunities. |
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| Maternal Separation |
An experimental paradigm in which the experimenter separates a mother rat or mouse from her offspring for some period of time (minutes to hours) to study the effects of maternal deprivation on offspring development. |
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| Mating effort |
The portion of reproductive effort (time and energy invested) in the form of achieving matings (sexual access). |
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| Maxillary central incisor (in humans) |
One of the large, two front teeth of the upper jaw. |
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| Maya |
The term used to refer to (1) a group of indigenous languages spoken from Mexico to Honduras and El Salvador; (2) the people who speak those languages, considered as an ethnic group; (3) the archaeological culture of the ancestors of the contemporary speakers of Maya languages. |
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| Mayapan |
A walled Maya city in Yucatan built after 1000 CE and abandoned before 1500 CE. |
Common era (CE) |
| Mechanical piercing device |
A commercial or homemade tool designed to assist or perform the actual piercing of the tissue. |
Piercing |
| Mechanistic Target of Rapamycin (mTOR) |
A protein kinase, which in humans is encoded by the MTOR gene. |
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| Medial Preoptic Area (MPOA) |
A region of the brain located in the anterior part of the hypothalamus that critically regulates care giving behavior. |
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| Medium Spiny Neurons |
A special type of GABAergic inhibitory cell representing 95% of neurons within the human striatum, a basal ganglia structure. |
Basal Ganglia (brain) |
| Melanin |
For most organisms, it is the pigment in skin and hair, but is also found in the iris of the eye, the inner ear, and some parts of the brain. Melanin is produced as three basic types: eumelanin, pheomelanin, and neuromelanin. The melanin in the skin is produced by melanocytes, which exist across human populations in similar concentration in their skin. However, the melanocytes in some populations produce variable amounts of melanin. This variation is likely due to the melanin’s property to absorb and dissipate UV radiation, protecting skin from harmful damage. UV exposure is associated with increased risk of malignant melanoma, a cancer of melanocytes. |
Eumelanin |
| Memory |
The faculty by which the mind stores and remembers information. |
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| Meningitis |
An inflammation (swelling) of the protective membranes covering the brain and spinal cord. |
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| Meningococcus (Neisseria meningitidis) |
A bacterium that can cause meningitis and meningococcemia, a life-threatening infection in the bloodstream (sepsis). |
Meningitis |
| Menopause |
The time of life when female menstruation naturally and permanently ceases. |
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| Menstrual cycle |
Relating to monthly ovulation or menses. |
Ovulation |
| Menstruation |
The regular discharge of blood and mucosal tissue from the inner lining of the uterus through the vagina. |
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| Mentalizing |
The process of representing and reasoning about the mental states, thought, and feelings of the self and others. Also known as Theory of Mind. |
Theory of Mind (ToM) |
| Mescaline |
A potent psychedelic found in the peyote cactus. Structurally similar to dopamine and norepinephrine and also activates serotonin receptors. |
Dopamine, Norepinephrine (noradrenaline), Peyote (Lophophora williamsii), Receptor |
| Mesoamerica |
The area from central Mexico to Honduras and El Salvador occupied by a network of indigenous societies united by use of related calendars, similar technologies, and the exchange of materials needed to support those technologies before the entry of Europeans into the region. |
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| Mesoderm |
The middle of the three primary germ layers formed in embryonic development and develops into the muscles of the cardiac and skeletal systems, the skeleton and connective tissue, blood vessels and cells, and some other internal organs such as the kidneys and gonads. |
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| Messenger RNA (mRNA) |
A type of RNA that conveys the genetic instructions from DNA in the nucleus to the ribosomes in the cytoplasm of the cell, where proteins are synthesized. |
Deoxyribonucleic acid (DNA), Ribonucleic acid (RNA) |
| Metabolic disorders |
A group of conditions that affect the body’s ability to process and use nutrients, such as carbohydrates, fats, and proteins. |
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| Metabolic rate |
The rate at which fuels (such as sugars or fats) are broken down for the production of cellular energy. |
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| Metabolism |
The conversion of food into energy and the chemical building blocks for proteins, lipids, nucleic acids, and glycans as well as the elimination of metabolic wastes. |
Glycans, Lipids, Nucleic acid, Protein |
| Metabolite |
Any substance produced during metabolism. |
Metabolism |
| Metabolomics |
The scientific study of the set of metabolites present within an organism, cell, or tissue. |
Metabolite |
| Methylation |
A biological process in which a methyl group (CH3) is added to a molecule, typically to DNA, proteins, or other cellular structures. In the context of DNA, DNA methylation refers to the addition of a methyl group to the DNA molecule, usually at cytosine bases in a CpG dinucleotide. This modification can regulate gene expression by turning genes on or off without changing the underlying DNA sequence, and it plays a key role in processes like development, aging, and disease. Methylation patterns can be inherited or influenced by environmental factors and lifestyle. |
Deoxyribonucleic acid (DNA), DNA methylation, DNA sequence, Protein |
| Mexica |
The ethnic group that composed Aztec society in central Mexico during the 16th century CE. |
Aztec, Common era (CE) |

