How do traits get passed to new generations using DNA?

Answer 1

Well let me start from the very beginning, when a male and female mate, the sperm cell contains about 23 chromosomes. Each of the those chromosomes contain genes/alleles of his genetic structure. In a womans egg cell, she also has 23 chromosomes containing her genetic structure. When those two cells fuse, they create a single cell, which then divides into more cells, eventually creating a new baby. Notice how this baby was made up entirely of his/her parent's chromosomes and traits as human beings. However for example, if one parent had blue eyes, and the other parent had brown eyes, then wouldn't there be a contradiction? Not exactly. (For example), the baby comes out with blue eyes, that would be the dominant gene, and the other gene of brown eyes would still be in this baby, but recessive instead of dominant. So because of this trait staying with this child for the rest of his life, then when he goes and has a kid, that recessive gene is going to most likely be dominant in the baby that the baby i mentioned before has later in his life. Deoxyribonynucleic acid, (DNA) contains genes/alleles contained in the chromosomes. I'm 13 and hope this helped.