Q1. For a diploid species, imagine one set of 100 demes, each with a constant size of 50 individuals, and another set of 100 demes, each with 100 individuals. (a) If in each deme frequencies of neutral alleles A1 and A2 are 0.4 and 0.6 respectively, what fraction of demes […]

A cross ia made in tomatoes between a female plant from a pure line that is trisomic for chromosome 6 and a normal diploid male plant that is homozygous for the recessive allele for potato leaf (pp). a) A trisomic F1 plant (PPp) is back crossed to potato leaved male. […]

As we discussed, Rh is the most complex of the blood group types, involving at least 45 different antigens. The most clinically important antigen, D or RhO, is encoded by the gene RhD which is found on chromosome 1. Individuals that are Rh-positive have either one or two RhD genes, […]

A homozygous claret (ca=ruby eye color), curled (cu=upcurved wings), fluted (fl-creased wings) fruit fly is crossed to a pure-breeding wild-type fly. The F1 females are testcrossed with the following results: Fluted              4 Claret             173 Curled              26 […]