Question 14
How does natural selection work with regards to genes and what is passed to the next generation?

a. Those with the most favorable combination of genes survive and pass their DNA to the next generation.
b. Those with the least favorable combination of genes survive and pass their DNA to the next generation.
c. Those with the most favorable combination of genes die off not allowing their DNA to be passed on to the next generation.
d. Natural selection allows genes to mutate, therefore changing the species.

Which taxon group is more specific, in regards to organisms that are in that group? mammalia animalia

Draw the structure of dna nucleotide with adenine as nitrogenous base

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?