Answer:
A
Explanation:
it is more then one character
The continued presence of vestigial structures suggests that these structures do not have a great impact on fitness, like in the whale, because even with these structures, the whale has been able to survive and reproduce.
This is because the GP120 protein
of the HIV virus that forms the ‘knob’ is
essential for the infection of CD4 cells
of the immune system by the virus. The glycoprotein is, therefore, a good
target for vaccines especially since the
molecule is highly conserved because most mutations in the region could be highly deleterious to the virus.
Answer:
whorls, organs, symmetry
Explanation:
Some important traits that influence the reproductive success of a flower include: the presence or absence of <u>whorls</u>, the fusion of <u>organs </u>to one another, and the overall <u>symmetry </u>of flowers
