Recombinant DNA Technology
Under which of the following conditions would population gene frequencies remain the same?

Active migration between groups
Random mating
Selection for homozygotes
Small population size

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Recombinant DNA Technology
Knockout mice are created by

infecting the mouse with a retrovirus
transfecting embryonic stem cells with an altered gene sequence
creating a chimera by fusing cells from two different cell lines
mutagenizing a mouse and selecting for mutant offspring

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