Answer:
a feature or quality belonging typically to a person, place, or thing and serving to identify them.
Explanation:
<span>New combinations of genes may be produced by </span>immigration, mutation and sexual reproduction. These new combinations are also called variations.
Physical anthropologist John Hawks and colleagues suggest that evolution is speeding up as population sizes are being continued to mushroom and new mutations which are endorsed.
Human population increased rapidly. The increase began those days of upper Paleolithic which is documented by archaeological evidence.
The hemoglobin molecule has four binding sites for oxygen molecules: the iron atoms in the four heme groups. Thus, each Hb tetramer can bind four oxygen molecules.
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