Answer:
mitosis, gene expression, differentiation
Explanation:
<span>The correct answer is number one. A chromosome is composed of many genes. A chromosome is referred to as a DNA molecule in an organism's body, which consists of genetic materials. Chromosomes consists of numerous genes within them, in their nucleus and mitochondria, genes are found inside the Chromosomes itself.</span>
It would be called a biome, like a tundra or a desert.
