A child's gender (male or female) is determined by the chromosome that the male parent contributes.
Females have XX sex chromosomes.
Males have XY sex chromosomes.
A male infant results if the male contributes his Y chromosome while a female infant results if he contributes his X chromosome.
A deficiency in the diet of the element Iodine [I] can lead to goiter. This is why in the U.S. we placed more of it in all table salt ("iodized salt").
Cold air is drier because the water molecules are more likely to condense to a liquid.
This was the answer on my course, hope it helps!
Cells need both genes, and each cell inherits half of the genes from both cell parents.
The basic unit of life is a cell. Have a great day!
