The genetic map shown in the figure was generated by identifying transferred genes after ____
a. allowing transformation to proceed for varying amounts of time
b. allowing conjugation to proceed for varying amounts of time
c. bacterial cells were infected by various bacteriophages
d. replica plating of E. coli auxotrophs
e. allowing transduction to proceed for varying amounts of time
ANSWER: b
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Couples who are at risk for passing on alleles for cystic fibrosis, muscular dystrophy, or other genetic disorders can eliminate this risk by opting for ________
a. preimplantation diagnosis b. amniocentesis c. chorionic villi sampling d. fetoscopy
If the nucleotide sequence, ACTGAG,
represents the sticky end of a DNA molecule, to what other nucleotide sequence would it “stick”?
a. TGACTC b. UGACUC c. ACTGAG d. ACUGUG e. GAGTCA
Arrange the following in order from most general to most specific
1 natural selection 2. microevolution 3. intrasexual selection 4. evolution 5. sexual selection A) 4, 1, 2, 3, 5 B) 4, 2, 1, 3, 5 C) 4, 2, 1, 5, 3 D) 1, 4, 2, 5, 3
In which of the following ways does an anaphase I cell differ from an anaphase II cell?
A. Anaphase I cells have fewer chromosomes than Anaphase II cells. B. Anaphase I cells lack a nuclear membrane; anaphase II cells have a nuclear membrane. C. Anaphase I cells are capable of fertilization and anaphase II cells are not. D. Anaphase I cells have chromosomes separating; anaphase II cells have chromatids separating.