Mendelian genetics, Incomplete dominance, Codominance (Questions & Answers) Rated 100% Correct!!

23rd pair - Sex chromosomes = determines the sex of an individual (Female: XX, Male: XY) Allele - same trait, different chromosome of homologous pair B locus - controls the color of melanin pigment: B is black; b is brown Chromosome pairs - same gene or genes affecting the same traits at corresponding positions Chromosome pairs 1-22 - carry info on how you look (eye color, hair type, height, etc). Chromosome Theory of Inheritance - 1. Genes are located on chromosomes, 2. Behavior of chromosomes during meiosis and fertilization accounts for inheritance patterns. Codominance - both alleles are expressed dominant gene (A) - characteristic expressed in homozygous plant - AA, characteristic expressed in heterozygous plant - Aa E is epistatic to B - it prevents melanin from entering the hair, but does not affect the melanin in the skin. E locus - prevents melanin from being deposited in the hair shaft: E is full pigment; e is blocked pigment Epistasis - a gene at one locus alters the phenotypic expression of a gene at a second - sequence of dna/rna genetics - study of biological inheritance patterns and variation genotype - genetic instructions Gregor Mendel () - Austrian monk father of genetics research re-discovered after his death pea plants for his research