A biologist is studying a species of crab. He hypothesized that if a crab
has large pincer claws, then it will have greater reproductive success. He
placed 50 crabs with small pincers and 50 crabs with large pincers together
in an isolated area that closely resembled their natural environment. He
observed several generations of the crabs over the next ten years.
If the data supported his hypothesis, which result would he most likely
observe?

The percent of crabs with small pincers would increase

The percent of crabs with large pincers would increase

The DNA in crabs with small pincers would mutate in order to produce larger pincers

Crabs born with small pincers would developed larger pincers and pass this trait to their offspring

c

explanation:

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.

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )