Answer:
b. occurs at the population level via natural selection
Explanation: Genetic adaptation can be described as the change or adjustment in structure or habits by which a species becomes better able to function in its environment, occurring through the course of evolution by means of natural selection.
An example of genetic adaptation at a population level is the encouragement of bipedalism in humans.
The degree of adaptation that can occur in a population is limited by the amount and kind of genetic variation in a population. If a population is suited to adapt and survie in its habitat it will undergo very little genetic adaptaction (prime example is the cockroach). If a population on the other hand is not able to adapt to its habitats´circumstances the popuation will undergo genetic variation in order to survive and ensure the continuation of the species. ( prime example are the birds Darwin studied in the Galapagos Islands)
Animals show anatomical adaptations—e.g., the body of the fish is suited to life in the water; the body of the bird is adapted for flight; and the land mammals show a wide variation in the structure of limbs and body that enables some to run swiftly, some to climb, some to swing from tree to tree, some to glide through the air, and others to jump.
The plasma <span>membrane lacks a nuclear membrane and membrane-bound organelles</span>
Answer:
The best answer to the question, given the research found on this particular process in E. Coli specifically, would be: D) It identifies hemimethylated base pairs and methylates the unmodified base.
Explanation:
According to research on this pretty complicated topic, in E. Coli specifically, and other gram negative prokaryotes, it has been found that the presence, or absence of methylation will initiate MutS, which is a protein both in prokaryotes and eukaryotes responsible, in a full complex, of initiating and carrying out the full mechanism of DNA mismatch repair. As the daughter DNA strands are produced from parent strands, these first ones arise with several deletions and mismatches which need to be repaired and they are recognized due to the fact that daughter strands are hemimethylated. This circumstance activates MutS in E. Coli, who will then bind to the DNA strand that needs to be repaired and together with other members of the complex, like MutH and MutL, begin the process of repair.
In eukaryotes and other prokaryotes, the exact process by which DNA is repaired by MutS is still not totally known.
Answer:
More food is available for predators.
Explanation:
If biologists kept introducing hares into the environment to keep the hare population at a high and constant level so there is more availability of food for the predator and so the population of predator increases. If there is no predator for the hare so it will increase in number and eliminate all the vegetation of the environment while on the other hand, if the biologists kept only the lynx population at a high and constant level so it decreases the population of hares because lynx feeds on hare.