Y chromosome - définition. Qu'est-ce que Y chromosome
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Qu'est-ce (qui) est Y chromosome - définition

SEX CHROMOSOME IN THE XY SEX-DETERMINATION SYSTEM
Y-chromosome; Chromosome Y (human); Y-gene; Y-chromosomes; Holandric trait; Y Chromosone; Y-Chromosome; Holandric; Chromosomes, human, y; Y-DNA; Y Chromosome; Y chromosomes; Y-chromosone; Y-chromsome; YDNA; Human chromosome Y; Y DNA; Partial deletion of Y; Y chromosome (human); Chromosome Y; Y chromosomal; Chromosome y; Y human chromosome; Y-chromosomal

Y chromosome         
(Y chromosomes)
A Y chromosome is the chromosome in a man's cells which will produce a male baby if it joins with a female's X chromosome. Y chromosomes are associated with male characteristics. Compare X chromosome
.
N-COUNT
Y chromosome         
¦ noun Genetics (in humans and other mammals) a sex chromosome which is normally present only in male cells, which are designated XY. Compare with X chromosome.
Y chromosome microdeletion         
MALE STERILITY DUE TO CHROMOSOME Y DELETION IS CHARACTERIZED BY A SEVERE DEFICIENCY OF SPERMATOGENESIS. CHROMOSOME Y DELETIONS ARE A FREQUENT GENETIC CAUSE OF MALE INFERTILITY.
Y Chromosome Microdeletion; Y chromosome deletions; Y chromosome deletion
Y chromosome microdeletion (YCM) is a family of genetic disorders caused by missing genes in the Y chromosome. Many men with YCM exhibit no symptoms and lead normal lives.

Wikipédia

Y chromosome

The Y chromosome is one of two sex chromosomes in therian mammals and other organisms. The other sex chromosome is the X chromosome. Y is normally the sex-determining chromosome in many species, since it is the presence or absence of Y that determines the male or female sex of offspring produced in sexual reproduction. In mammals, the Y chromosome contains the gene SRY, which triggers male development. The DNA in the human Y chromosome is composed of about 62 million base pairs, making it similar in size to chromosome 19. The Y chromosome is passed only from father to son. With a 30% difference between humans and chimpanzees, the Y chromosome is one of the fastest-evolving parts of the human genome. The human Y chromosome carries 693 genes, with 107 of these being protein-coding, but some genes are repeated and that makes the number of exclusive protein-coding genes just 42, the numbers are given for telomere-to-telomere CHM13. The Consensus Coding Sequence (CCDS) Project only classified 63 out of 107. All single-copy Y-linked genes are hemizygous (present on only one chromosome) except in cases of aneuploidy such as XYY syndrome or XXYY syndrome. Because of fake gaps inserted in GRCh38 it may be not obvious that CHM13 added 30 million base pairs into the Y chromosome, which is almost half of it that was unknown before 2022 (and was present in many Genbank samples by mistake unknown that it was Y chromosome base pairs).

Exemples du corpus de texte pour Y chromosome
1. Like surnames, the Y–chromosome is passed from father to son, virtually unchanged through generations.
2. This is because the female sperm would lack the Y–chromosome needed for boys.
3. They said I had a Y–chromosome that was extremely rare.
4. The technique identifies male cells by dyeing green only those carrying the male Y chromosome.
5. They were examining the relationship between the male, or Y, chromosome and surnames.