The chromosome content of most human cells includes all of the following except

A. a pair of homologous X chromosomes (in females).
B. 2 pairs of sex chromosomes.
C. 23 pairs of chromosomes.
D. 22 pairs of autosomes.
E. a pair of nonhomologous X and Y chromosomes (in males).


B. 2 pairs of sex chromosomes.

Biology & Microbiology

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What will be an ideal response?

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____ assist and nourish cells that transmit electrical signals

a. Receptors b. Neurons c. Effector cells d. Glial cells e. Signal cells

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The majority of mature, self-tolerant lymphocytes are found in

A. the MALT. B. lymph nodes. C. the thymus. D. the spleen. E. the tonsils.

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The effect of population growth limiting factors begin to become evident at about the letter ____

a. A b. B c. C d. D e. E

Biology & Microbiology