I think it is c but im not for sure
Answer:
Basophils
Explanation:
Basophils are a special type of white blood cells that are produced in the bone marrow and their main role entails inducing and maintaining allergic conditions.
In staining, Basophils shows dark blue granules which contains histamine, heparin and peroxidase. In preparation of Schiff reagent ; magenta molecule ( Fuchsin dye ); gives a range of colors from magenta to purple. The stain cause nuclei to become blue, and glycogen and fungi to become magenta in color.
Answer:
Water
Explanation:
water molecule contains one oxygen covalently bound to two hydrogen atoms with no carbon present.
Answer:
Because natural selection selects for it. Thus it persists.
Explanation:
You have to understand heterozygote advantage. Basically, it's where heterozygotes have an advantage over homozygotes. In the case of sickle cell disease, heterozygotes have an advantage, and natural selection favors whatever is advantageous. Thus, because heterozygotes each have one recessive sickle-cell allele, as natural selection favors the heterozygotes, the recessive sickle-cell allele persists and remains in the gene pool.