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

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

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Recombinant DNA Technology
Knockout mice are created by

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

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