The portal has been deactivated. Please contact your portal admin.

Question Video: Describing the Relationship between Chromosomes and Genes Biology

Which of the following correctly describes the relationship between chromosomes and genes? [A] There are many genes located on a single chromosome. [B] There are many chromosomes within one gene.

01:27

Video Transcript

Which of the following correctly describes the relationship between chromosomes and genes? (A) There are many genes located on a single chromosome or (B) there are many chromosomes within one gene.

DNA is made up of a sequence of bases on a sugar–phosphate backbone. Certain stretches on a strand of DNA are called genes. The base sequence of these genes provides a code for the construction of particular proteins that play a role in the organism the DNA belongs to. The proteins may be for building structures, for catalyzing reactions, for digestion or excretion, or any number of other purposes.

Genes can only be copied for the purposes of making protein when the DNA strands are loose and can be separated. But when DNA is not in use, it coils and condenses into a chromosome. Since a chromosome contains an entire strand of DNA, it will contain all of the genes located on different stretches of that strand. So the relationship between genes and chromosomes is that there are multiple genes located on a chromosome.

Therefore, the correct answer is (A). The relationship between genes and chromosomes is that there are many genes located on a single chromosome.

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.