If a chromosome lacks certain genes, what has most likely occurred?
A) disjunction
B) an inversion
C) a deletion
D) a translocation
E) a nonduplication
Ans: C) a deletion
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Cool, dry air descends at which latitude?
a. the equator b. 30o N and S c. 45o N and S d. both 30o and 60o N and S e. at the poles
Bacteriophages may reproduce using a __________
pathway in which viral DNA becomes part of the host chromosome. Fill in the blank(s) with the appropriate word(s).
Dizygotic twins originate from two separate fertilization events
a. True b. False
One form of hemophilia is caused by a sex-linked recessive gene. Assume that a man with hemophilia marries a phenotypically normal woman whose father had hemophilia. What is the probability that they will have a daughter with hemophilia? (Note: In this
problem, you must include the probability of having a daughter in your computation of the final probability.) A) 1/16 B) 1/8 C) 1/4 D) 3/4 E) 1/2