Suppose that a genetics research concludes that the probability of obtaining a double dominant phenotype in an F2 cross is 9/16. This conclusion can be valid only if one or more assumptions are true. Which of the following is a necessary assumption? a. Alleles have an equal probability of separating into gametes.
b. The two genes assort independently.
c. The sample size is small.
d. Both a and b
e. Both b and c

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.

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate

answer; the male's sperm cells have mitochondria, but because the sperm contributes dna but no cytoplasm, no mitochondria are passed to the egg at ferilization;