A gene is a small section of DNA?<span> that contains the instructions for a </span>specific<span>molecule, usually a </span>protein?. The purpose of genes?<span> is to store information. Each gene contains the information required to build </span>specific proteins<span> needed in an organism. The human genome</span>?<span> contains 20,687 </span>protein<span>-coding genes.</span>
The answer is B .
Biotic factor refers to living things .
Because they are made mostly or partly out of gas.
Answer:
Breathing, coloration to skin, beating heart, movement, flowing blood.
Explanation:
By the sexual combs, the flies of the male fruits have a structure similar to a brush comb near their hind legs.
