Answer: due to insufficient exocytosis in the type II alveolar cells
Answer:
Results in the evolution of the species: Directional selection
Results in new species: Disruptive selection
Favors traits at the two extremes: Disruptive selection
No increase in diversity: Directional selection
One extreme trait is favored: Directional selection
Diversity decreases: Stabilizing selection
Diversity increases: Disruptive selection
Explanation:
Directional selection which is also known as positive selection is known to be a mode of natural selection. In this type of selection, an extreme phenotype is favored over other phenotypes. This makes the allele frequency to move in the direction of that phenotype and this takes place over time.
Disruptive selection (known to be diversifying selection) talks about the certain changes in the population genetics whereby extreme values of a particular trait are favored over intermediate values. This results in new species.
While Stabilizing selection is a natural selection whereby there is a stabilization of the population mean on the particular value of a non-extreme trait. Here the diversity is decreases.
Answer: Embryos and the development of embryos of various species within a class are similar even if their adult forms look nothing alike.
Explanation:
I believe the correct response would be the 1st option.
Family members have a similar genetic make-up that may make them predisposed to cancer.
Answer:
B
Explanation:
We know that the AmpR gene region has been interrupted. So this means the AmpR gene will not function in the recombinant DNA.
But the question tells us that the TetR gene is not interrupted, so the TetR gene will still function.
AmpR represses the protein that confers resistance to ampicillin, and AmpR is no longer functional, <u>so the new bacterial cells will be resistant to ampicillin.</u>
TetR represses the protein that causes resistance to tetracyline, and TetR is still functional, <u>so the new bacterial cells will not be resistant to tetracycline. </u>
This means B, there will be <u>growth on ampicillin but not tetracycline containing media.</u>
