How does a germ cell become a gamete? So I know that the oocyte and the sperm are the female and male”germ cell”, and that the germ cells give rise to gametes, whichfuse at fertilization. What’s the process of a germ cell becomingactual “gametes”? (especially in females) Is it a […]

You are studying the expression of a proto-oncogene in a cancer cell and comparing it to expression in a non-cancer cell. You have done experiments to detect the presence of the proto-oncogene (DNA), the messenger RNA, and the protein in both cell types. Both cells have two copies of the […]

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 […]