In Figure 13-1, between which nucleotides is the DNA cut?
(a) adenine and thymine
(b) cytosine and guanine
(c) thymine and cytosine
(d) adenine and guanine

What pattern of migration do whales follow?

Which enzyme is responsible for “unzipping" the dna by breaking the hydrogen bonds between the nucleotides?

The genetic code is essentially the same for all organisms. based on this information, one can logically assume which of the following statements to be correct? a. dna was the first genetic material. b. the same codons in different organisms translate into the different amino acids. c. different organisms have different numbers of different types of amino acids. d. a gene from an organism can theoretically be expressed by any other organism. e. all organisms have experienced convergent evolution.