A transfer of genes between non-homologous chromosomes is known as

A. crossing over.
B. aneuploidy.
C. trisomy.
D. translocation.
E. duplication.


Answer: D

Biology & Microbiology

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Which of the following groups of people would be most comfortable at cooler temperatures?

A. calm people
B. quiet people
C. sedentary people
D. active people

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Unlike all other amine derived hormones, thyroid hormones

A. bind to membrane receptors to elicit a response. B. activate second messengers via binding to a membrane receptor. C. are derived from cholesterol. D. are produced by the gonads. E. bind to intracellular receptors rather than to membrane-bound receptors to elicit a response.

Biology & Microbiology

Recognition sites of restriction enzymes are ________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Which process establishes the three primary cell layers?

1.cleavage 2.blastulation 3.fertilization 4.gastrulation

Biology & Microbiology