Question

In reannealing experiments with denatured eukaryotic DNA, nonrepeated DNA sequences ________.

1) are very quick to hybridize
2) hybridize with moderate speed
3) are very slow to hybridize
4) do not hybridize
5) hybridize to centromere DNA

Answer 1

In reannealing experiments with denatured eukaryotic DNA, nonrepeated DNA sequences are very slow to hybridize due to the uniqueness and lack of complementary sequences present in the genome.

Step-by-step explanation:

In reannealing experiments with denatured eukaryotic DNA, non repeated DNA sequences are typically very slow to hybridize. This slow hybridization is because these sequences are unique and do not have complementary sequences with which to pair quickly. In contrast, highly repetitive DNA sequences reanneal very rapidly due to the abundance of identical or similar sequences present in multiple copies throughout the eukaryotic genome, aiding in the quick finding of matching sequences. Moderately repetitive sequences, such as those for ribosomal RNA (rRNA), hybridize at moderate speeds relative to highly repetitive and nonrepetitive DNA sequences.