ANTHR150 Lecture Notes - Lecture 3: Natural Disaster, Macroevolution, Penetrance
19 Oct 2016
School
Department
Course
Professor
Document Summary
Basic heredity: gregor mendel - pea plant. Used plants to gure out how parents pass on traits to future generations. Pea plant had characteristics that were easy identify. E. g. separated all yellow and green peas, then crossed the f1 generation: yellow x green = 100% yellow. F2 generation = 75% yellow, 25% green. All of the above plants produce yellow plants due to the dominant trait being expressed. All individuals receive one copy of each trait from each parent. Alleles: different variations that a physical characteristic can take; one of each of the parent"s alleles are passed on to offspring. Genotype: combination of alleles that is received from parents (yy, yg, gg) Phenotypes: what your body will produce; physically expressed characteristic. Y is the dominant allele, g is the recessive allele. If both are present in your genotype, only the dominant trait will be visible. Yy or gg homozygous: two of the same gametes/alleles.
