Answer:
Differential reproduction leads to a change in allele frequencies over time. This occurs because of natural selection favoring "successful" individuals that produce more viable offspring.
The sickle-cell allele is maintained in populations exposed to malaria through balancing selection, since heterozygous individuals have protection against the disease.
Answer:
answers: 3rd, then 2nd then 4th then 1st. 3rd goes in first, 2nd in 2, 4th in 3rd, 1st in last
Answer:
D. Stabilizing selection
Explanation:
Stabilizing selection helps to prevent extreme trait characteristics and focuses on the non extreme ones to ensure that such traits are prevalent.
Due to the fact that there isn’t enough food for a large number of the offspring and also the risk of losing all the eggs to those who had a small amount of eggs, stability was achieved after some generations that ensures that there was a balance in ensuring the eggs weren’t too few and too many.
Answer: Constrict the blood vessels and inhibit the kidneys from removing water from the blood
Explanation: Antidiuretic hormone(ADH) is an hormone produced in hypothalamus its helps regulate water in the body by it activity in the kidney and control blood pressure.
when ADH is at higher concentration it causes the blood vessels to constrict thereby preventing water from being loss from the kidney leading to high blood pressure.
High blood pressure also occur in adult whose blood vessels are weak and have constrict.