The gene that likely controlled flower color (purple or white) in mendel's pea plants has also been identified. the flower color gene encodes a protein called bhlh that cells require to make three different enzymes (dfr, ans, and 3gt) that function in the pathway shown above, leading to synthesis of the purple pigment anthocyanin. a. what is the most likely explanation for the difference between the dominant allele (pj and the recessive allele (p)of the gene responsible for these flower colors? b. given the biochemical pathway shown above, could a different gene have been the one governing mendels flower colors?

Idont understand by supporting the plant and holding the leaves up to the light. question 3 options: tap or fibrous root flower petals herbaceous or wood stems leaves with stomata

What did hunter gathers do to alter the environment?

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?