A scientist fused a mouse cell and a human cell, then treated the cell with specific antibodies covalently linked to
colored fluorescent dyes (antibodies to mouse proteins were labeled green; antibodies to human proteins were labeled
red). Forty minutes later, what will the researcher observe?
a. The fused cell will still be half red and half green.
b. The red and green fluorescent labels will be uniformly distributed throughout the entire membrane.
c. The red and green labels will be distributed in intermingled patches.
d. The red and green labels will flash intermittently.
e. The red and green labels will be distributed in a swirling pattern.
ANSWER: b
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Which of the following describes the Skene's gland?
A. It is located on the clitoral hood. B. It has no known function. C. Its ducts empty into the urethra. D. It secretes fluid for all women.
The cross represented by a+b+c+/abc × abc/abc is
A) a two-point testcross. B) a three-point testcross. C) a parental cross. D) a haploid cross. E) None of these
Dropping irrelevant variables from a regression equation might provide a better regression in what sense?
A. Might facilitate more efficient/precise estimates of the treatment effect (smaller standard errors). B. Only when the irrelevant variables are uncorrelated with the treatment(s). C. Only if the irrelevant variables have low p-values. D. Only if the irrelevant variables have many outliers.