Question

Which phrase best describes the makeup of a chromosome?

A. A single gene segment and many centromeres
B. Many chromatids and a single gene segment
C. Many strands of DNA and a single protein molecule
D. A single strand of DNA and many clusters of protein molecules

Answer 1

Chromosomes are coiled structures made of DNA and proteins, which contain the genetic instructions for making proteins organized into genes.

Step-by-step explanation:

Chromosomes are coiled structures made of DNA and proteins. They contain the genetic instructions for making proteins, which are organized into units called genes. Most genes contain the instructions for a single protein, and there may be hundreds or even thousands of genes on a single chromosome.