Both darwin and lamarck proposed mechanisms by which species might evolve. although darwin first published his ideas in the mid-1800s, most scientists continued to favor lamarck's explanation until near the end of that century. what was the most likely cause of the eventual shift from lamarck's hypothesis to that proposed by darwin?

a new generation of scientists was more open to considering new ideas.
lamarck's hypothesis did not take into consideration all that had been learned about genetics.
more evidence accumulated supporting darwin's ideas than could be found to support lamarck's.
it took several decades for darwin's ideas to appear in textbooks and for scientists to learn about them.

What type of competition exsist between two species. turtles and fish

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?

Food contains a sugar called ( ), which is broken down in a process called cellular ( ). this process uses ( ) to break down food molecules and provide energy for cells. fill in the parentheses