A male fruit fly carries the allele for yellow body color on his X chromosome. How would this male's genotype for this body color gene be described?
A. heterozygous
B. homogametic
C. holandric
D. hemizygous
E. homozygous
Ans: D. hemizygous
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Which series of letters lists the first four steps of the scientific method (see question 5) in the correct order?
(a) a, b, c, d. (b) a, b, d, c. (c) c, a, b, d. (d) d, c, a, b.
Which one of the following CORRECTLY represents the progression to cancer?
A) in situ, dysplasia, hyperplasia, malignancy B) dysplasia, in situ tumor, malignancy, hyperplasia C) hyperplasia, dysplasia, in situ tumor, malignancy D) dysplasia, hyperplasia, malignancy, in situ tumor E) malignancy, in situ tumor, hyperplasia, dysplasia
Child birth is regulated by a _____ feedback mechanism.
Fill in the blank(s) with the appropriate word(s)
Which of the following sequences of events in the production of recombinant DNA are in the correct order?
A. cut DNA with restriction enzymes, mix DNA with plasmid DNA, add DNA ligase B. mix DNA with plasmid DNA, cut with restriction enzymes, add DNA ligase C. add DNA ligase, cut DNA with restriction enzymes, mix DNA with plasmid DNA D. mix DNA with plasmid DNA, add DNA ligase, cut with restriction enzymes E. cut with restriction enzymes, add DNA ligase, mix DNA with plasmid DNA