Scientists have successfully cloned sheep and cattle for several years. A farmer is

considering the advantages and disadvantages of having a flock of sheep cloned

from a single individual. Din the issues the farmer should take into account

before making a decision. Your response should include:

• how a cloned flock would be different from a noncloned flock

• one advantage of having a cloned flock

• one disadvantage of having a cloned flock

• one reason that the former could not mate these cloned sheep with each

other to increase the size of his flock

one reason that the offspring resulting from breeding these sheep with an

unrelated sheep would not all be the same

1) gene flow

- it is described as the transfer of genes from one population to another population so that frequency of gene is increased.

-a zebra migrates to join a different herd of zebras.

2) natural selection

- a mechanism of evolutionary change in which individuals with advantageous traits survive and reproduce whereas the others ( those that can not adapt) eliminate from the population.

-competition for sunlight leads to taller trees.

3) mutation

- permanent change in the nucleotide sequence of dna ( genetic material) that could have harmful or useful consequences.

-the dna of a snake changes to make its venom stronger.

4) genetic drift - it is a random phenomenon ( that occurs by chance such as fire) that results in change in the gene frequency in a small population.    

-a grassfire randomly sweeps through a population of buffalo and kills most of the animals.

explanation:

it's not c. i took the quiz and got it wrong. so my best guess is b.

have a great day, and hope this .

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms