What would be an easy way to determine if a skull is a mammal's skull?

A. Examine the teeth.
B. Look for the remains of the tympanum.
C. Look for air sacs in the skull.
D. Measure the brain case volume.


Answer: A

Biology & Microbiology

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A heterozygote could have a variety of phenotypes depending on whether or not the mutation is recessive, dominant, or haploinsufficient. In this example, the gene A is necessary to form a tail in mice. If the mouse is a heterozygote (A/a), then what

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