a) a replicação do DNA é conservativa, isto é, a fita dupla filha é recém-sintetizada e o filamento parental é conservado. b) a replicação é semiconservativa, isto é, as fitas filhas consistem de uma fita parental e uma recém-sintetizada. c) a replicação de DNA é dispersiva, isto é, as fitas filhas contêm DNA recém-sintetizado e parentais em cada uma das fitas. d) a replicação do DNA é conservativa, isto é, as fitas filhas consistem de moléculas de DNA parental. e) a replicação é semiconservativa, isto é, as fitas filhas consistem de uma fita molde e uma fita codificadora.

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?

When mendel crossed a true-breeding short plant with a true-breeding tall plant all the offspring were tall. which term describes the gene for tallnes?

Which of the following is a true statement? question 8 options: populations can't evolve, only individual organisms. individuals have adaptations that can change over time. individuals have traits that may or may not make them successful at reproduction. individuals evolve to have adaptations.