D. an arctic fox is brown in summer and white in winter
I think its free nitrogen
Answer: C. A substrate
Explanation:
A substrate is a substance on which an enzyme act. The enzyme acts on substrate X and converts it to Y.
Answer:
210
Explanation:
Frequency of dominant allele is represented by "p"
and frequency of recessive allele is represented by "q"
Given

Thus,

As per Hardy Weinberg's second equation of equilibrium -

Substituting the given values in above equation, we get -

So the total number of heterozygous individual is equal to