Apet store has two guinea pigs. one has white fur and one has black fur. the white guinea pig has two recessive alleles for fur color (bb). the black guinea pig has one dominant allele (b) and one recessive allele (b) for fur color. what will most likely be the phenotypes of the offspring in a cross between the two guinea pigs? explain your answer

The instructions for making proteins come originally from

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?

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine