its A. Genes make up chromosomes. it did it on study island..... i did the other answer the other person got and i got it wrong....and then it told me it was A. Genes make up chromosomes.
HOPE I COULD HELP
Answer:
A. Genes make up chromosomes.
Explanation:
Genes are strung together on chromosomes. Chromosomes are found in the nucleus of the cell. Different organisms have different numbers of chromosomes.
