Genes are specific sections of (Fill in the blank)

Question

Answer choices
alleles, chromosome, incomplete dominance, mitosis, codominance, centromere, DNA, diploid, reproduce, phenotype, meiosis, RNA
Is the answer chromosome, or DNA?

Answer 1

Depending on the syllabus, it can be both. The more accurate answer in my eyes would be chromosome.

Answer 2

The answer is actually DNA.

Answer 3

what is a mutation?