The failure of sister chromatids to separate during meiosis is called

a. crossing-over.
b. tetrad formation.
c. disjunction.
d. nondisjunction.


Ans: d. nondisjunction.

Biology & Microbiology

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A. produces a non-protein neurotoxin. B. infects the nervous system of humans. C. is a dinoflagellate. D. produces a non-protein neurotoxin AND is a dinoflagellate.

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The increase in the concentration of toxicants up the food chain is called:

a. bioaccumulation. b. biological magnification. c. detoxification. d. organic magnification. e. none of the above.

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Eukaryotic chromosomes are a combination of proteins and DNA, which allows the cell to perform which four essential functions?

What will be an ideal response?

Biology & Microbiology

Saliva contains salivary ____ an enzyme which begins the chemical breakdown of starch

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

Biology & Microbiology