Genetic manipulation techniques have been most successful in __________ populations
a. California condor
b. plant
c. panda
d. snail darter
B
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Epigentic mechanisms of gene regulation ____ and are ____
A. can be inherited by daughter cells; permanent B. can be inherited by daughter cells; often reversible and responsive to environmental change C. can be inherited by daughter cells; random with respect to the environment D. are not inherited by daughter cells; reversible and responsive to environmental change E. are not inherited by daughter cells; permanent
The basic cells that the body uses for rapid communication and control are
a. neurons. b. neuroglia. c. chondrocytes. d. formed elements. e. nerves.
Which of the following does NOT cause changes in allele frequencies?
a. genetic drift b. mutation c. natural selection d. gene flow from migration e. random mating
The two copies of each type of chromosome found in normal somatic (body) cells in an organism, throughout the cell cycle, are called:
A. Homologous chromosomes B. Daughter chromosomes C. Kinetochores D. Sister chromatids