Translocation occurs when:a
part of a chromosome breaks off and attaches to a nonhomologous chromosome.
b. part of a chromosome breaks off and attaches to a homologous chromosome.
c. crossing-over events occur.
d. genes move from one area on a chromosome to another area on the same chromosome.
e. a Y chromosome replaces an X chromosome in a female cell.
a
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The sensor kinase for the OmpF: OmpC two-component regulatory system is
A. the MicF RNA. B. the OmpK protein. C. the EnvZ protein. D. None of the choices are correct.
The ultimate source of energy trapped during photosynthesis is
(a) CO2. (b) H2O. (c) O2. (d) sunlight.
A man and woman are each heterozygous for the autosomal recessive disorder cystic fibrosis. If they
want to have three children, what is the probability that only one of the children will have cystic fibrosis?
a. 1/4 b. 3/4 c. 9/16 d. 9/64 e. 27/64
In a double helix, a ________ always pairs with a ________.
a. purine; pyrimidine b. carbon; phosphate c. purine; phosphate d. pyrimidine; carbon