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Boys and Girls Forecast Table 2010

Published: 2010-02-06 Author: Blue Spirit Parenting Network editor Parenting Network h20pulse.com

Have a boy or a girl? The elderly in the family often talk about it. I think boys and girls are the same. However, people often tell me how to have a boy, how to have a girl ... and others say that the secret to having a boy or a girl is the "secret of the palace." Are these "secret recipes" for boys and girls reliable? Let's take a look together.

First of all, what is the difference between men and women? The difference between men and women can usually be distinguished from the appearance. Men are burly, women are slender; men have beards, and women have breasts ... In fact, the most essential difference between men and women lies in the chromosomes in the cell. In the central nucleus of a human cell, there is a special structure called a "chromosome." All 100,000 human genes are stored on the chromosome.

Each cell has 46 chromosomes in 23 pairs. Among them, 1 to 22 pairs of chromosomes are called "autochromosomes" and are shared by men and women. The 23rd pair is the "sex chromosome", showing a difference between men and women. The female "sex chromosome" is composed of two X chromosomes, namely "XX" type; while the male sex chromosome is composed of two different chromosomes "X" and "Y", namely "XY" type.

Sperm and egg (ie, sperm and egg cells) are different from somatic cells, each having only 23 chromosomes. For chromosome 23, there are two types of Y or X in males, and only one of X in females. When the sperm and egg are combined to become a fertilized egg, there may be two options: one is the combination of X sperm and X egg, which is type XX, and a daughter; the other may be Y sperm and X egg, which is XY type, male.

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