X-linked genes in female mammals often demonstrate ________

A) phenotypic mosaicism
B) underrepresentation in the genome
C) nonrecombination during meiosis
D) heterochromatin formation
E) incomplete dominance


Answer: A

Biology & Microbiology

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If a couple is planning on having three children, what is the probability that only one will be male?

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The Ixodes tick can infect humans with Borrelia burgdorferi during which stage(s) of its life cycle?

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Biology & Microbiology

This figure shows the geological history of North and South America and the closing of the Isthmus of Panama

If a single species were distributed throughout the region indicated by the arrow in the left-most panel, and today is found as two separate species, one in the Atlantic Ocean and one in the Pacific, would this be more likely to be an example of allopatric speciation by the dumbbell model or the peripheral isolate model? Why? What will be an ideal response?

Biology & Microbiology