A mutation that occurs when a base is inserted into or deleted from a DNA sequence, completely altering the subsequent sequence of codons, is a
A) frameshift mutation.
B) missense mutation.
C) silent mutation.
D) nonsense mutation.
A) frameshift mutation.
A mutation that occurs when a base is inserted into or deleted from a DNA sequence, completely altering the subsequent sequence of codons, is a frameshift mutation.
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The filamentous phages all contain
A. single-stranded DNA. B. double-stranded DNA. C. single-stranded RNA. D. double-stranded RNA.
What factor does not appear to impact the distribution or diversity of meiofauna on sandy beaches?
a. The water circulation b. The availability of space c. The type of sediment d. The oxygen availability
It is now easier than ever for humans to travel to and live in other parts of the world. Because of this, populations from different parts of the world that were once isolated from each other are now much more likely to interact and breed. This leads to increased ____
a. frequency dependent selection b. stabilizing selection c. genetic drift d. gene flow e. founder effects
If you were able to look very closely at a portion of DNA and find methylated histones, you would
A. be looking at a region of inactive chromatin. B. be looking at a chromatin remodeling complex. C. be mistaken since only DNA can be methylated, not histones. D. be looking at a region of active chromatin.