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

humans can cause extinction of a species through overharvesting, pollution, habitat destruction, introduction of invasive species (such as new predators and food competitors), overhunting, and other influences. explosive, unsustainable human population growth is an essential cause of the extinction crisis.

explanation:

i didn't have the answer choices , but i tried my best.

one would be wind another would be water density

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.