Question

how many genes make up the human genome? four: adenine, thymine, guanine, and cytosine 23 pairs of genes 20,000 - 25,000 genes 3 billion genes

Explanation:

The human genome is estimated to contain around 20,000 - 25,000 protein - coding genes. Adenine, thymine, guanine, and cytosine are nucleotides, not the number of genes. There are 23 pairs of chromosomes, not genes. And 3 billion refers to the number of base pairs in the human genome, not genes.

Answer:

C. 20,000 - 25,000 genes