Answer:
a. The corn borer must have or generate (by mutation) heritable variation in resistance to the toxic protein.
b. The resistant corn borers must survive better or reproduce more than nonresistant corn borers.
Explanation:
When there is a change in the surroundings of organisms, some genetic variations become beneficial to the organisms. Natural selection favors the organisms having these genetic variations.
The development of resistance in the corn borer population requires the presence of the gene for the resistance in the population. If there is no gene already present in the population, there should be a mutation to give rise to such gene/s. The corn borers having this gene should be able to survive better in the presence of the toxic protein and should leave more progeny in order to increase the frequency of the gene in the population over the generations.
Answer:
Explanation:
if intercalated discs are not present in the cardiac muscles then they might not contract properly and thus blood would not be pumped efficiently to other organs
the answer is a fish amphibians and mammals
Explanation:
I took the test
Answer:
d
Explanation:
its reversing all time...
Answer:
A bone
Explanation:
It is present in every cell of the body. Most of the phosphorus in the body is found in the bones and teeth