Four of the five plants listed below have
flagellated sperm. Select the EXCEPTION.
a. mosses
b. horsetails
c. ginkgos
d. conifers
e. ferns
D
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Why does sexual reproduction produce more genetic variability in a population than asexual reproduction?
A. Sexually reproducing organisms mutate more rapidly during DNA replication than asexually reproducing organisms. B. Sexually reproducing organisms mix parental genetics in addition to crossing-over and random alignment. C. Organisms arising from sexual reproduction can change their genetic material in response to environmental changes. D. In sexual reproduction, the parents exchange genetic material of the nuclei, thus increasing their variability. E. Offspring are identical to one parent, when produced through sexual reproduction.
Describe the packing of chromatin from the 10-nm to the 30-nm fiber stage. What is the role of histones?
What will be an ideal response?
________ are genes that exist in more than two allelic forms. The genes responsible for the human ABO blood types are an example of this phenomenon
Fill in the blank(s) with correct word
In which group did the amniotic egg first evolve?
a. amphibians b. birds c. reptiles d. mammals e. frogs