1. There are two sets of genes and chromosomes has two series.
2. genes and chromosomes can be transmitted to descendants.
3. While there is a cell division, meiosis. A chromosome pairing And separate into daughter cells that occur in different cells. The same would happen with the gene, with the separation of the two alleles to heterogeneity.
4. separation of the chromosomes are paired together to stem cells. While there is cell division Each pair then proceeded independently as well as the separation of Elle. To the heterogeneity
5. When the reproduction The combination of egg and sperm, a zygote is so random. The combination of a set of chromosomes from the egg and sperm is so random, like a set of alleles in the germ cells of the parents on the reproduction, it is so random as well.
6. All cells developed from zygote to chromosomes by half. From the mother and half from the father. Genes half It comes from the mother and half from the father, too, makes it look like you were born. Ranging from parents