Since the 1800's the trend of selectively breeding dogs for human desired traits became very popular. What can be a negative effect to selectively breeding dogs? A - Dogs learn to only breed with dogs that look like them

B - Dogs can inherit traits that are negative to the dog's health.

C - Dog owners only want an attractive dog to show off

D - Dogs without the traits will become undesirable to all humans

Dogs can inherit traits that are negative to the dogs health

Explanation: because dogs have good traits they are negative to the dogs health

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.