Which of the following best describes the sex chromosomes?

a. They are non-homologous.
b. They are completely homologous.
c. They are heterozygous.
d. They are partially homologous, but also have unique regions.


Answer: d. They are partially homologous, but also have unique regions.

Biology & Microbiology

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a. the same as the surrounding density. b. greater than the surrounding density. c. less than the surrounding density.

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The case of the anorexic student illustrated the role of ________ in the etiology of anoerxia.

(a) stimulus anticipation (b) punishment (c) conditioned-taste aversions (d) the high positive incentive value of food

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DNA methylation and histone acetylation are examples of _____

A) genetic mutation B) chromosomal rearrangements C) karyotypes D) epigenetic phenomena E) translocation

Biology & Microbiology

How will E. coli appear if the mordant is not applied?

A. colorless B. gram-variable C. gram-positive D. gram-negative

Biology & Microbiology