IMED2004 Study Guide - Final Guide: Zygosity, Chromosome, Hair Loss
Document Summary
Crosses that examine the inheritance of two different traits. Cross or mating between organisms involving two pairs of contrasting traits. [remember: a monohybrid is a heterozygote for a single gene, e. g. a/a] If the genes are on different chromosomes: If the genes are on the same chromosome: If the location of the two genes is not known: Mendel did not know the location of the units of inheritance. Round and yellow are the dominant phenotypes, r and y are the dominant genes. The number of individuals for each trait: Mendel"s second law - the law of independent assortment. Gene pairs on different chromosome pairs assort independently at meiosis. Alleles at different loci separate independently of one another. 50% men bald by age 50, 95% hair loss is pattern baldness. = autosomal dominant males, recessive females, sex influenced trait. Linkage analysis study using snps on x chr. Pattern baldness and snps were not inherited independently as predicted by.
