During the preparation of a human genomic library, plasmids containing human DNA fragments are
inserted into:a.
compatible human cells.
b. an antibiotic-resistant strain of E. coli to protect the inserted fragments.
c. antibiotic-sensitive E. coli cells that become antibiotic-resistant if transformed.
d. bacteriophages.
e. mRNA molecules.
C
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Your father has type B blood, and your mother has type O blood. You learn that you also have blood type O. What
does this tell you?
a. You father is homozygous for type B blood. b. Your mother is heterozygous for type O blood. c. Your father's genotype is IBi and your mother's genotype is ii. d. Your father's genotype is IBIB and your mother's genotype is ii. e. Your father's genotype is IAIB and your mother's genotype is ii.
In the final stage of SCNT, a(n) _____ is used to cause the foreign cell to fuse with, and empty its contents into, the
cytoplasm of the egg.
a. fine point needle b. virus c. micropipette d. electric current e. calcium phosphate
Which of these organisms helped biologists determine the contents of phloem?
A) Aphids B) Ants C) Termites D) Grasshoppers E) Leafhoppers
Which of the following would be an example of the bottleneck effect?
a) one species of insect splitting in two species without any sort of physical isolation b) certain plants having genetic advantages that allow them to produce more offspring c) most of the fish in a pond being poisoned, leaving only a few survivors d) birds transporting seeds from one island to another