Which of the following statements best describes the eukaryotic chromosome?
A)It is composed of DNA alone.
B)The nucleosome is its most basic functional subunit.
C)The number of genes on each chromosome is different in different cell types of an organism.
D)It consists of a single linear molecule of double-stranded DNA plus proteins.

Question

Quizplus · Accepted Answer

Eukaryotic chromosomes consist of a single, linear molecule of double-stranded DNA that is wound up around proteins to form a structure known as chromatin. The proteins associated with the DNA include histones, which organize the DNA into nucleosomes, the basic repeating unit of chromatin. However, the nucleosome is not the most basic functional subunit of the chromosome. While the number of genes on each chromosome may vary between different cell types of an organism, it is not a defining feature of eukaryotic chromosomes. Therefore, choice D is the best answer.

Which of the Following Statements Best Describes the Eukaryotic Chromosome