Because men have one copy of the X chromosome
Hypothesis, is the answer
Answer:
Polygenic traits are controlled by a number of separate genes.
Hope it helps! :D
Answer:
Sweating helps cool down the body. Water is released through glands in the skin, evaporates off the skin and the body is cooled. During exercise, muscles heat up more, so more sweat is needed.
Explanation:
A biologist whose interest lies primarily in the study of plants or animals can be called a naturalist, although these days it's more likely she'll be called a natural historian, a botanist, or a zoologist.
