Only nine types of aneuploids are known in newborns because

A) only nine chromosomes undergo nondisjunction.

B) most types of aneuploids are lethal early in development.

C) most aneuploids do not cause detectable defects.

D) most aneuploids do not affect the phenotype.


B) most types of aneuploids are lethal early in development.

Biology & Microbiology

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Why did the scientists assume the plants and

animals they encountered in the cloud forest on top of New Guinea’s Foja Mountains had never been encountered by other humans before?

a. these species were unknown to even the native peoples b. the animals were unafraid of humans c. they found some species that were thought to have been extinct for decades d. none of these answers are correct e. all of these answers are correct except d

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Low-growing, hardy plants of the ____________________occur at high latitudes, where there is a layer of

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

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Freshwater is most likely to be polluted

A) by oil spills in ocean water moving inland. B) as a result of eutrophication. C) by contaminants from aquifers moving to surface waters. D) from organic solvents and farming chemicals in surface water runoff. E) by radioactive waste seeping from nuclear reactors.

Biology & Microbiology

Ribosomes are directly involved bacteriophage _______________ synthesis

a. lipid b. DNA c. RNA d. protein

Biology & Microbiology