a. state why evolution is occurring b. state whether mutation, natural selection

Question

a. state why evolution is occurring

b. state whether mutation, natural selection, genetic drift or gene flow appears to be the mechanism of evolution

c. and describe why you picked a particular mechanism of evolution

Researchers have been studying an isolated, small population of wolves (fewer than 30 individuals) on Isle Royale in Lake Superior for the past 30 years. This year they find that there are only 16 individuals left in the population and only 1 of these individuals is a female.

A large population of colonially nesting (large groups of individuals nest together in a colony) shorebirds varies in plumage color from very white to dark gray. During the breeding season, a train derailment causes a toxic substance to flow into a lake where the colony is located. Approximately 75% of the mating individuals in the colony die. During the following breeding season, researchers notice that almost all of the individuals in the population have medium to dark gray plumage.

Explanation / Answer

a) Every organism in this world is wanted to exist and their species should continue to thrive, if they face difficulties they have to face it and ovwrcome it to live. This is the survival of fittest, so the species will adapt for envkenviron and slowly they will evolve to cope up with their surroundings.

B) Not only mutation will be a mode of evolution, also the gene flow, generic drift and other phenomena also will contributes to the process of evolution. Sudden mutation some times will make things worser also. Hence, slow and steady gene flow of desired characters will bring better evolution.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.