How does an apple fly's attraction to a particular type of fruit promote genetic divergence?
A. On apple trees, they are much more likely to encounter hawthorn flies than other apple flies.
B. The scent allows female flies to produce more offspring.
C. It makes no difference in promoting genetic divergence.
D. On apple trees, they are much more likely to encounter other apple flies than hawthorn flies.
Ans: D. On apple trees, they are much more likely to encounter other apple flies than hawthorn flies.
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A. resource limitation decreases birth rates. B. abundant resources reduce competition. C. density-independent mortality increases. D. predation pressure is reduced.
Femaleness or maleness is genetically set at
A) gamete formation. B) fertilization. C) the embryonic period. D) the fetal period.
Describe the major differences and similarities between gymnosperms and angiosperms
What will be an ideal response?
After fertilization, the zygote grows through a series of cell divisions called cleavage. The embryo does not grow in size although the cell number is increasing. How does this happen?
What will be an ideal response?