What process does NOT produce variation?

a. crossing over
b. random alignment of chromosomes during meiosis
c. mitosis
d. genetic recombination of alleles
e. sexual reproduction


ANSWER: c

Biology & Microbiology

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Answer the following statement true (T) or false (F)

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As an erythroblast develops into an erythrocyte, it

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The heath hen, found off the east coast of North America in the eighteenth century, is now extinct. What finally caused its extinction?

A) overexploitation B) pollution C) natural disasters D) habitat loss

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Where are the food materials digested by fungi located?

A) externally B) within their mitochondria C) within food vacuoles D) within their cells

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