Which statement best describes the Ampullae of Lorenzini?

A) The scales of a shark that provide protection and allow for better swimming efficiency and speed
B) A series of pores that runs along the side of a shark allowing it to feel vibrations in the water.
C) An opening behind each eye on the top of the head that allows a shark or ray resting on the bottom to breathe
D) A protective coating for the eye.
E) Jelly filled pores near the head and snout that help detect electrical singles.
F) Acts like the nostrils allowing a shark to detect smells in the water
G) A reflective coating on the back of the eye that allows for increased vision in low-light conditions.
H) Organs used by male sharks to grasp on to females during reproduction

What must be true for natural selection to heppen

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?

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist