In Thomas Hunt Morgan's experiments, males had white eyes but females did not. What cross could you perform with his flies to obtain white-eyed females?
A. cross the F1 offspring to each other
B. cross an F1 female to a white-eyed male
C. cross an F2 female with an F1 male
D. cross an F2 female with a white-eyed male
E. crossing either the F1 or F2 females with a white-eyed male will produce some white-eyed females
E. crossing either the F1 or F2 females with a white-eyed male will produce some white-eyed females
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A human sperm cell possesses autosomes and
A) a Y chromosome always. B) exactly the same genetic information as a body cell. C) both an X and a Y chromosome. D) an X chromosome always. E) either an X or a Y chromosome.
Which is an example of Müllerian mimicry?
A. A skunk uses white and black as coloration to warn predators that dealing with them will be unpleasant. B. The unpalatable viceroy butterfly mimics the poisonous monarch butterfly. C. Weeds mimic the form and color of an agricultural plant to avoid being weeded by the farmer.
A prokaryotic organism is isolated from a glacier, where it was thriving. Based on your knowledge of the plasma membrane, you would expect to find a predominance of:
What will be an ideal response?
Cancer cells ____
a. maintain telomerase function b. have longer telomeres than normal cells c. eventually die due to shortening chromosomes d. have circular chromosomes e. cannot replicate their DNA