In fruit flies, the gene for eye color is sex-linked (X-chromosome) and red eye color is dominant over white. The gene for body color is an autosomal trait with gray dominant over black. A heterozygous red-eyed, pure-bred gray female mates with a heterozygous gray male who has red eyes. What […]

1. On an autosome, genes A and B are twenty map units apart. An AABB male mates with an aabb female. What % of the gametes produced by their hybrid offspring will be Ab? 2. On an autosome, genes C and D are 10 map units apart. A CCDD male […]

The lactose permease transporter of E. coli can accumulate lactose inside the cell by transporting lactose in against a concentration gradient, driven by a co-transport process in which the same protein brings protons into the cell from a higher concentration outside to a lower concentration inside. A. What is the […]

Check your state Natural Heritage Program (or that of a nearby state if your state doesn’t have one) on the internet. Find one species that is threatened or endangered in your area. What kinds of factors have lead to that species being listed as threatened or endangered? What actions have […]