A shift from expected allele frequencies, resulting from chance, is known as
a. natural selection.
b. genetic drift.
c. mutation.
d. gene flow.
a
Biology & Microbiology
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Which one of the following types of proteins interacts directly with a stop codon?
A. release factor B. initiation factor C. transcription factor D. elongation factor E. sigma factor
Biology & Microbiology
The loss of mayflies from a stream suggests that the quality of water is declining; therefore, mayflies are a(n) ____ species.
a. degraded b. endangered c. threatened d. keystone e. indicator
Biology & Microbiology
Shelled Amebas
What will be an ideal response?
Biology & Microbiology
Once species have formed, they keep their identity by
A. somatic mutations. B. structural modifications. C. genetic blocks. D. developmental differences. E. isolating mechanisms.
Biology & Microbiology