The wing color of a certain species of moth is controlled by alleles at a single locus. gray (g) is dominant to white (g). a scientist studied a large population of these moths, tracking the frequency of the g allele over time, as shown in the figure below: a graph showing the frequency of g allele in a population over 20 years. the frequency in 1960 is 0.8 and decreases to 0.5 by 1980. © 2012 flvs assuming that the population was in hardy-weinberg equilibrium for this gene, what percentage of the moth population was heterozygous in 1960? 20% 32% 40% 64%

Option B, %

Explanation:

Given,

Gray (G) is dominant to white (g)

As per Hardy Weinberg's equation, the frequency of dominant allele is represented by "p" and recessive allele is represented by "q"

In 1960, the frequency of allele "G" is

So it means,

As per Hardy Weinberg's I equilibrium equation-

Substituting the value of "p" in above equation, we get -

Then, the frequency of population of moth with genotype "GG" is

the frequency of population of moth with genotype "gg" is

and the frequency of population of moth with heterozygous population with genotype "Gg" is

As per Hardy Weinberg's II equilibrium equation-

Substituting the available values in above equation, we get -

Thus, % moth population was heterozygous in 1960

Hence, option B 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.