What is the biological significance of genetic diversity between populations?

The question is incomplete as it does not have the options which are:

A) Genes for adaptive traits to local conditions make microevolution possible.

B) The population that is most fit would survive by competitive exclusion.

C) Genetic diversity allows for species stability by preventing speciation.

D) Isolated populations become more fit.

E) Diseases and parasites are not spread between separated populations.

Option-A

Explanation:

Genetic diversity refers to the diversity which arises in a population due to the genetic recombination. The genetic recombination allows the organism to mutate and the organism can evolve within a short period.

In the given question, if the population has large genetic diversity then it represents the evolution in short duration of time and the species have been formed through microevolution.

Thus, Option-A is correct.

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.

a) carbon, hydrogen

b) carbon, hydrogen, oxygen, nitrogen

c) carbon, hydrogen, oxygen, nitrogen, phosphorus

d) sugar

e) amino acid

f) nucleotide