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20 Cards in this Set
- Front
- Back
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Mutagen
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Induce mutations (toxins, chemicals)
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Fitness
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Measured by reproductive success. Average number of offspring for parents of a certain genotype vs. parents of a different genotype
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Directional Selection
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Favors one extreme form of a trait (Ex. human brain size).
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Stabilizing Selection
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Favors average version of trait. (Ex. Infant birth weight)
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Disruptive Selection
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Favors both extremes of a trait. Over time can lead to speciation
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Hemoglobin
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Proteins in red blood cells that transport oxygen
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Sickle cell
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Recessive
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Malaria
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A disease caused by a parasite. Millions die from it every year
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Endogamous
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Breeding with only members of the population
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Exogamous
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Breeding with only nonmembers of the population
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Founder Effect
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Occurs when a small group of a large parent population migrates to a new region and is reproductively isolated
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Huntington’s Chorea
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A rare genetic disease where the central nervous system degenerates and the individual loses control over voluntary movements. Founders effect can cause small populations to have this
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Admixture
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The exchange of genetic material between two or more populations
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Race
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IDK
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Cline
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A gradual change in some phenotypic characteristics from one population to the next
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Prenatal Stage
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The three periods (trimesters) of pregnancy ending with birth
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Postnatal Stage
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includes neonatal (first month), infancy, childhood, puberty, and adolescence
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Adult Stage
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Includes reproductive period to the end of child bearing years, and senescence
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Stressor
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Any factor that interferes with homeostasis (Ex. Heat, cold, disease)
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Menarche
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The onset of menstruation in an adolescence female
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