Advice 1: How to determine the hair color of the child

Many parents long before the birth of the child want to know the future color of his hair. It is theoretically possible, if you know some of the laws of genetics. And even the tests no need to take.
How to determine the hair color of the child
In the process of forming the hair color of the future of the child involved genes of both parents. Note that any genes, including those responsible for hair pigmentation, can be either dominant or recessive. In other words, strong or weak. In the process of the birth of the future man strong, dominant genes block the action of weak recessive and passed on to future generations. That is, if the father the gene for hair color is dominant, it will be inherited by the son or daughter.
If both parents are dominant or recessive genes, the "result" of their "fight" will be unpredictable. In the case can interfere with the genes of grandparents, influencing the outcome. In this case, the hair color of the future baby can be determined only with a certain degree of probability.
To determine the factor of dominance or recessivity their genes by the following criteria. If you have brown or green eyes, normal blood coagulation factor or a tendency to baldness (in males) and genes are dominant. Recessive genes are characterized by straight hair, lack of skin pigmentation and a negative rhesus factor of blood.
Don't forget that genetics is not mathematics. It does not give accurate answers to the questions of heredity, but only determines the most likely possibility. But in the process of transferring genes may include the genes of relatives of several generations. The result is unexpectedly born in a family is a red-haired child, who inherited the hair color from some distant relative. This is especially true at birth of first child.
Also do not forget that during the first 5 years of life a newborn's hair color may change more than once. Usually they change in the first or second years of life, and are formed completely by the age of 5 years. But in puberty because of changes in the amount of testosterone in the body of a teenager hair color may change again.

Advice 2 : How to guess the color of baby's hair

In order to guess the hair color of the child, no need for testing. It is enough to identify the parents there are dominant genes and one recessive.
How to guess the color of baby's hair
The parents, being in expectation of a miracle, I want to know in advance not only the gender of the child, but also other details. Many parents wonder what is the hair color of the future child. It is theoretically easy to figure out in line with existing laws of genetics. To determine the color of baby's hair, do not need to take any tests.

That affects the hair color of the unborn child?

It is clear that the hair color of the unborn child influenced by the genes of both parents but one parent in these genes are dominant (stronger) and the other recessive (weak). The factor of dominance or recessivity you can define yourself. People with dominant genes of brown or green eye color, the presence of pigmentation on the skin, curly hair. People with recessive genes, usually negative RH factor, perfectly straight hair, the absence of any pigmentation on the skin, poor blood clotting. So if the father's dominant genes, so the child is likely to inherit his hair colour. It so happens that my father and mother have dominant or recessive genes, then the result is undefined. The child can inherit the hair color of a distant relative with the strong dominant genes.

It should be noted that the color of the child during the first five years of life can change, not once. Very often the baby is born with sparse dark hair. It happens that the genetic dominance of the parents plays no role in the formation of the hair color of the future baby. Hair color depends on how much the child at the time of birth of the melanin pigment. Of course, on the amount of melanin is influenced by genes, but also influence the endocrine system of the baby. Hair color also responds to the hormones formed by the time of birth.

Can change hair color?

Typically, the first hairs (fluff) the baby gradually falls a few months after birth, and then start to grow hair the color that match formed the genotype of the child. It also happens that even in adolescence, the person has changed their hair color. It is affected by hormonal changes and puberty.

Based on the foregoing, it can be noted that the hair color of the child influence how the genes of the parents, and the formation of a hormonal background at the time of birth. Some parents know which hair color is most likely a baby, if, for example, at grandma's, dad's and uncle's hair black or red.
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