The biological species concept defines a species<span>as members of populations that actually or potentially interbreed in nature, not according to similarity of appearance. Although appearance is helpful in identifying </span>species<span>, it </span>does<span> not </span>define species<span>.</span>
I think correct answer is:
a restriction enzyme
Restriction enzymes cut DNA molecules at a limited number of specific locations, each of which contains a recognition sequence, or restriction site.
D: genes make up chromosomes
Warm up routines increase the blood flow in the body and also increases the temperature. It is always recommended that a person warms up their body before a work out.