Answer:
c. 20,000 to 30,000
Explanation:
The correct answer to the question is c. 20,000 to 30,000. A chromosome contains 20,000 to 30,000 genes in the cell nucleus. Genes are segments of DeoxyriboNucleic Acid (DNA). Genes are receipts for proteins which is important element to life. Chromosome is a thread like structure located inside nucleus of cell.