In DNA, the substitution of a purine for a pyrimidine or a pyrimidine for a purine is called a(n) ________
A) inversion
B) transmutation
C) transversion
D) transition
E) substitution
C
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Which of the following explains the difference between VNTRs and RFLPs?
A. In VNTRs, we are looking at sequence differences in genes; in RFLPs we are looking at sequence differences in noncoding DNA. B. In VNTRs, we are looking at sequence differences in noncoding DNA; in RFLPs we are looking at sequence differences in genes. C. In VNTRs, we are looking at the number of times a sequence is repeated; in RFLPs we are looking at size differences resulting from different restriction sites being present. D. In VNTRs, we are looking at size differences resulting from different restriction sites being present; in RFLPs, we are looking at the number of times a sequence is repeated.
Only one parent is needed for
A. sexual reproduction. B. identical twins. C. intraspecific hybrids. D. asexual reproduction.
Carbon atom cycles continuously through the biosphere. What is a by product of cell respiration, and what does this by product represent?
A.) CO2; completely oxidized carbon B.) C6H12O6; a reduced version of carbon C.) CO2; a reduced version of carbon D.) C6H12O6; completely oxidized carbon
Which of the following eukaryotic cells does NOT have a cell wall?
A. Bacteria B. Fungi C. Plants D. Human