at accounts for 100% of a population not being polymorphic? For instance, an entire South American Indian population being O od type?

A population of horses are having a problem. They are not mating randomly, they are mating with those that have the same flying speed as their own: Fast (FF), Medium speed (FS), or Slow (SS). You arrive to this land and count the following horse of each flying velocity: Fast = 71 Medium speed = 90 Slow = 31 If we consider these results Generation 1, what are the expected number of Fast individuals for each genotype in Generation 3 if we have only inbreeding, that is, FF only reproduces with FF; FS only reproduces with FS; and SS only reproduces with SS? round down to the whole number.

Cockroaches from the dormitories at Texas A&M University usually weigh about 1 gram. However, about 100 miles west of the university is a colony of much larger cockroaches in which some individuals obtain a weight of as much as 25 grams. These cockroaches of unusual size (COUS) have apparently evolved to consume the large supply of garbage that exists in the region. If a 25-gram cockroach is crossed with a 1-gram cockroach, their progeny grow uniformly to a size of about 13 grams. If two of these 13-gram (F1) cockroaches are crossed, cockroach sizes from 1 gram to 25 grams are produced. However, the 1-gram and the 25-gram cockroaches are rare, occurring at a frequency in each case of about 1 in 64.   If a 13-gram F1 cockroach is crossed with a 1-gram cockroach, how frequently are 9-gram cockroaches expected? Cockroaches from the dormitories at Texas A&M University usually weigh about 1 gram. However, about 100 miles west of the university is a colony of much larger…

Sickle Cell Anemia is an example of "balancing selection" in which natural selection works against the extremes of a trait and favors the intermediate phenotype (e.g. the heterozygous "carriers" of the sickle cell trait) True or false?