Some cattle were given bovine growth hormone (bgh) to see if they would produce more meat. the animals were studied over a period of two years. animals in group a were injected with bgh. what was the independent variable in the experiment?
(explain how you got that letter choice)
a. the amount of bgh that each group received
b. the amount of meat produced
c. the size of the cow
d. the time the cows were observed.

i don't know, but does anyone wanna be friends? i'm doing my homework at 1: 49 in the morning : /

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.