Artificial selection is responsible for the differences in these vegetables.
A Directly, more
I just answered this question on USATEST PREP and got it right.
Answer:
Nitrogenous bases contain the genetic information, their amount is variable among different species, and the arrangement of these bases is also variable among different species
Explanation:
Both Watson-Crick and Pauling's DNA models considered that DNA nitrogenous bases (i.e., Adenine, Cytosine, Thymine and Guanine) contain the genetic information that determines the characteristics of living organisms. Moreover, both DNA models also considered that nitrogenous base composition varies between species, as well as the arrangement of these bases in the DNA chain also varies between species. Based on these features, Linus Pauling considered that a model where nitrogenous bases would be arranged on the outside of the DNA molecule would be easier for the DNA molecule to be replicated, transcribed, or repaired. Although incorrect, Pauling's DNA triple helix model was fundamental to develop the helical (double-stranded) structure of DNA, which was finally discovered by Watson and Crick in 1953.
<span>The third option is correct, seed coat, stored food, embryo. The coat is what protects the inner parts from outside infuences, while the food is the nutrients that the seed uses when growing and developing. The embryo will eventually become the new plant that grows out of the seed. Seeds usually fall from things like pinecones on the ground near the original tree, which is why coniferous forests are usually very dense.</span>
