Answer:
The correct answer is -
B. Genes make up the structure of chromosomes.
Step-by-step explanation:
Genes are the segment of the DNA molecule or composed of the DNA sequence which decides what characteristics one will have. The chromosomes are the structure that contains long DNA along with the proteins.
The Genes also present in the coiled DNA present in the chromosomes, performs translation to produce proteins that decide the traits in offspring once chromosomes are passed to them.