Which of the following statements is supported by Chargaff's rule about the composition of DNA?
A:DNA is a single stranded nucleic acid that contains uracil.
B:The number of adenines in a strand of DNA is equal to the number of thymines.
C:The "steps" of the DNA ladder are made of sugar and phosphates.
D:DNA is a complex of RNA wrapped around protein
Why is DNA replication said to be semiconservative?
A:The old cell keeps part of the original DNA during cell division.
B:The new DNA strand can only be constructed in the 3' to 5' direction.
C:The double helix becomes a single strand of DNA.
D:New DNA has one original strand and one replicated strand.
Which of the following is the complimentary DNA strand for the sequence shown below?
ACT GCA
A:ACG TCA
B:ACU GCA
C:UCT GCU
D:TGA CGT
What is the central dogma of molecular biology? Explain its meaning.
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Which of the following statements is supported by Chargaff's rule about the composition of DNA?
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