The ratio of the outcomes in that Punnett Square is 2:2
Cells divide during mitosis to make identical copies of itself
Answer:
the frequency of the resistant allele after one generation is 0.989
Explanation:
Given that :
A farmer plants Bt cotton that is genetically modified to produce its own insecticide.
Of the cotton bollworms feeding on these Bt plants, only 5% survive
i.e the survival rate s = 5% =0.05
unless they have at least one copy of the dominant resistance allele R that confers resistance to the Bt insecticide
Frequency of R allele = 0.01
In order to determine what will the frequency of the resistance allele be after one generation of cotton bollworms fed on Bt cotton; we need to first determine the frequency of the recessive allele r.
According to Hardy-Weinberg Equilibrium ;
p+q = 1
Let p = R and q = r
R + r = 1
0.01 + r = 1
r = 1 - 0.01
r = 0.99
Now; the frequency of the resistance allele after one generation can be calculated as :

where ;
q' = R
q = r



q' = 0.989
Thus; the frequency of the resistant allele after one generation is 0.989
Answer - A negative feedback loop.
When one is exposed to higher temperatures, the body starts regulating its own temperature by the process of negative feedback loop. In response to higher external temperatures one starts sweating, and this results in lowering of the internal temperature and cooling down of the body.
I believe it's D. Tell me if I am wrong.