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sex linkage
liaison f sexuelle

Sexual connection. The presence of genes unrelated to sex in the sex chromosome, which leads to certain features that appear in only one sex. Sex-linked genes in humans are found only in chromosomes
While the Y chromosomes are entirely related to sex.
For example:
The color blindness gene in humans is found in the chromosome, and normal vision is dominant over color blindness. If N = normal, and n = color-blind person, then:

natural
Color blind
Phenotypes

In this case, the heterozygous XNX is called a carrier because it has normal vision but carries a recessive allele.
Therefore, if she is intercourse with a natural male, it will be:

Genetic patterns
seed
Tanker
Natural
Phenotypes

This means that the result of the punnet square genetic table indicates the possibility that half of the boys are color blind and half of the girls are carriers.
One of the most serious effects of sexual intercourse is bleeding (haemophilia), but its transmission and inheritance are as shown above.


sexual reproduction f sexuelle

Sexual reproduction. Reproduction involves the meeting of two cells
Two nationalities of gametes or their fusion, one from a male father and the other from a female mother. The two pairs are haploid, and when they fuse (zygote fertilization), the combined cell (fertilization) becomes a diploid number of chromosomes. The zygote divides repeatedly after fertilization, eventually giving rise to a new organism. For humans, the situation is as follows:

Mona
split
sperm
meiosis
Sew organic
New membership (bimodal)
Uniform brides

Unlike asexual reproduction, offspring of sexual reproduction are genetically unique (except in the case of completely identical twins) because they get half their chromosomes from the father and half from the mother. Therefore, each fertilization produces a new combination of chromosomes, which in turn produces a new organism.


shoot
pousse f. scion m.

Fara. A chick. The part of a flowering plant located above the soil level, such as the stem, leaves, buds, and flowers.


short sight (or myopia)
myopie f

Nearsightedness. A defect in the human eye that results mainly from the distance between the lens and the retina being longer than normal. This causes distant objects to focus in front of the retina, leading to blurry vision. Myopia is corrected with concave lenses.

Improvidence
Corrected myopia