To guess hair color of the child, there is no need for testing. For this purpose it is enough to define which of parents has prepotent genes, and at whom recessive.
Future parents, being in expectation of a miracle, want to know beforehand not only a sex of future child, but also other details. It is interesting to many parents what will be hair color of future fumes. Theoretically it is simple to find out it, making a start from the existing laws of genetics. To define hair color of the child, it is not necessary to make any tests.
What affects hair color of future child?
It is clear, that the hair color of future child is influenced by genes of both parents, but at one of parents these genes prepotent (strong), and at another recessive (weak). The factor of dominance or recession can be defined independently. People with prepotent genes have brown or green color of eyes, existence of pigmentation on skin, a curly hair. People with recessive genes have, as a rule, a negative Rhesus factor, ideally straight hair, lack of any pigmentation on skin, bad blood clotting. So, if at the father prepotent genes, so the child, most likely, inherits his hair color. Happens so, as at the father, and mother has prepotent or recessive genes, then the result will be unforeseen. The child can inherit hair color of the distant relative with strong prepotent genes.
It should be noted that the hair color at the child within the first five years of life can change, and not once. Very often the kid is born with redenky dark hair. Happens that the gene dominance of parents does not play a role in formation of hair color of future kid. The hair color depends on that how there is a lot of at the child at the time of the melanin pigment birth. Of course, the amount of melanin is affected by genes, but also has impact and work of an endocrine system of the kid. The hormonal background created by the time of the birth is also responsible for hair color.
Whether the hair color can change?
As a rule, the first volosik (down) at the kid gradually drop out in several months after the birth, and then hair of that color which correspond to the created child's genotype already begin to grow. Happens and so that even at teenage age at the person the hair color cardinally changes. It is influenced by change of a hormonal background and also puberty. Proceeding from all aforesaid, it is possible to note that the hair color of the child is affected both by genes of parents, and formation of a hormonal background by the time of the birth. Some parents know with what hair color most likely the child will be born if, for example, the grandmother, fathers and uncles has hair of black color or red.