Answer:
Sometimes, there can be random fluctuations in the numbers of alleles in a population. These changes in relative allele frequency, called genetic drift, can either increase or decrease by chance over time. ... Genetic drift can result in the loss of rare alleles, and can decrease the size of the gene pool.
Answer:
It depends on the fish (I do not see any pictures) Any fish is an example of natural selection.
Explanation:
A good example would be that polar bears grew and evolved to have white fur to blend in the snow to sneak upon prey. However, their brown bear counterparts failed to do that. So due to better camouflage and hunting technique, the polar bears survived more up north.
Answer: c. when she ends the diet she regains additional body fat.
Explanation:
Obesity can be defined as a genetic disorder in which the body obtains and retains too much amount of body fat. It is different from being overweight.
Obesity happens when the person obtains more amount of calories in the food then actually burned through work or exercise. Obesity increases the risk factor for arthritis, stroke and cancer.
Here, in the given situation, ending up diet is the likely cause of regaining weight again. As the unstable diet is likely to add more calories then actually utilized by the body and will be retained as fat.
