Why+do+Racial+Genes+Dominate+Others?

= = = **Why is it that in bi or multi racial couples, kids come out with certain genes and traits more visible than others?** =

In each of our trillions of cells are [|chromosomes]. Chromosomes are the things that hold all of your genes. Chromosomes come in pairs, one pair from each parent. Around each chromosome are genes, one gene for each trait in your parents. So basically, everybody has two copies of each gene, one from each parent. Both of these genes in the pair deal with the same trait, but one of the pair is dominant. For example, if one gene of the pair says blue eyes, and the other says brown, whichever gene is stronger pulls over and shows up in the child.

These genes that are in pairs are called alleles. Each [|allele] is one of two options, dominant or recessive. The dominant gene or allele is used in the development of a child's traits, while the recessive gene is pushed aside. For example, if one parent has brown hair and another has red, the child will most likely have brown hair, as red and blonde hair is a recessive gene. All genes are given a letter for description; an uppercase letter depicts a dominant gene, while a lowercase letter depicts a recessive gene. For example, "A" would be the brown hair gene, and "a" would be a red hair gene.

Recessive genes can be present in individuals at times as well as or in place of the dominant genes. Basically, if there is no dominant gene making up a trait, the recessive gene steps up into place. They are the second priority and are expressed when the dominant gene is absent. Recessive genes can be passed down from generation to generation without ever being shown. For example, both parents of a child can have brown eyes, but the child may have blue eyes. This is because both parents carry the blue eye recessive gene and it becomes expressed in the child. =Dominant and Recessive Genes= normal vision ||= normal vision nearsightedness night blindness color blindness* || non-red hair curly hair full head of hair widow's peak ||= blonde, light, red hair red hair straight hair baldness* normal hairline || unattached earlobes freckles broad lips ||= no dimples attached earlobes no freckles thin lips || fused digits short digits fingers lack 1 joint limb dwarfing clubbed thumb double-jointedness ||= normal number normal digits normal digits normal joints normal proportion normal thumb normal joints || normal pigmented skin normal blood clotting normal hearing normal hearing and speaking normal- no PKU ||= susceptibility to poison ivy albinism hemophilia* congenital deafness deaf mutism phenylketonuria (PKU) || Graph 1: dominant and recessive genes Graph data found at:[]
 * =  ||= Dominant Traits ||= Recessive Traits ||
 * = eye coloring ||= brown eyes ||= grey, green, hazel, blue eyes ||
 * = vision ||= farsightedness
 * = hair ||= dark hair
 * = facial features ||= dimples
 * = appendages ||= extra digits
 * = other ||= immunity to poison ivy

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