In a population of Biology instructors 250 out of 1000 have a receding hairline; the rest do not. Assume that having a receding hairline is completely recessive and is controlled by a single genetic locus. Calculate the following:

a. The expected genotype frequencies.

b. The number of heterozygous individuals that you would predict to be in this population.

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

explanation:

idk