A polar body, once formed, has no further function and dies
a. True
b. False
ANSWER: True
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The transformation step in creating bacteria genetically engineered to produce human proteins involves:
A. binding of the donor DNA to the vector DNA and renaturing. B. cleaving the donor and vector DNA so they can be bound into a single molecule. C. bacteria taking up the recombinant DNA in the form of the vectors. D. bacteria expressing the novel proteins encoded by the donor DNA. E. None of the answer options are correct.
The major category(ies) of hypersensitivity(ies) that typically involve(s) a B-cell immunoglobulin response include(s)
A. type IV only. B. type I only. C. type I and type IV. D. type I, type II, type III, and type IV. E. type I, type II, and type III.
Based on their response to a particular hormone from
the anterior pituitary, Sertoli cells of the male are most like __________ of the female. a. uterine cells b. oviducts c. ovarian follicles d. cervix cells e. the corpus luteum
A heterozygous fruit fly with normal wings and a gray body (VvBb) is crossed with homozygous flies with vestigial
wings and black bodies (vvbb). This type of cross is known as a: a. monohybrid cross. b. dihybrid cross c. polytropic cross. d. true breeding cross. e. chromosomal cross