What is the 49 algorithm?

The algorithm is to calculate the sex of the fetus.

Formula: seven, seven, forty-nine, ask when the mother has it, and add one to nineteen after the mother's birth year.

Explanation: 49+ pregnant sun moon-actual age of mother giving birth to baby+19-1-2-3-4-5-6-7-8-9 = result (even number is female, odd number is male)?

For example: 49+9-25+19-1-2-3-4-5-6-7-8-9 = 7 (odd numbers are male treasures).

Determinants of boys and girls:

In fact, boys and girls are born through the free combination of genes, and this combination is mostly the result of natural selection.

Because the sex of a person is determined by the XY chromosome in the germ cell. Mainland friends can predict boys and girls through Y chromosome identification in Hong Kong. ?

Because half of the sperm have (22+X) chromosomes and the other half have (22+Y) chromosomes. Therefore, X and Y in male chromosomes are the sex-determining chromosomes. When sperm and egg cells combine, the sex has been determined.