The tortoiseshell pattern on a cat

A) usually occurs in males.
B) is the result of a homozygous recessive condition.
C) results from X chromosome inactivation.
D) is a result of alleles on the Y chromosome.


Answer: C

Biology & Microbiology

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Which type of physical mapping would be best to use when variable recombination frequency is a concern?

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The hierarchical nature of cellular structure is accurately illustrated in which of the following lists of substances (from smallest to largest)?

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The total number of different three-base combinations of the four nucleic acid bases is:

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Biology & Microbiology