y-chromosome wikipedia - EAS

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    https://en.wikipedia.org/wiki/Y_chromosome

    The Y chromosome is one of two sex chromosomes (allosomes) in therian mammals, including humans, and many other animals. The other 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

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    Discovery
    The Y chromosome was identified as a sex-determining chromosome by Nettie Stevens at Bryn Mawr College in 1905 during a study of the mealworm Tenebrio molitor.

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    Before Y chromosome
    Many ectothermic vertebrates have no sex chromosomes. If they have different sexes, sex is determined environmentally rather than genetically. For some of them, especially reptiles, sex depends on the incubation temperature.

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    Many groups of organisms in addition to therian mammals have Y chromosomes, but these Y chromosomes do not share common ancestry with

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    In humans, the Y chromosome spans about 58 million base pairs (the building blocks of DNA) and represents almost 2% of the total DNA in a male cell. The human Y chromosome contains

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  2. https://en.wikipedia.org/wiki/Human_Y-chromosome_DNA_haplogroup

    In human genetics, a human Y-chromosome DNA haplogroup is a haplogroup defined by mutations in the non-recombining portions of DNA from the male-specific Y chromosome (called Y-DNA). Many people within a haplogroup share similar numbers of short tandem repeats (STRs) and types of mutations called single-nucleotide polymorphisms (SNPs).

  3. https://en.wikipedia.org/wiki/Y-chromosomal_Adam
    • In human genetics, the Y-chromosomal most recent common ancestor is the patrilineal most recent common ancestor from whom all currently living humans are descended. He is the most recent male from whom all living humans are descended through an unbroken line of their male ancestors. The term Y-MRCA reflects the fact that the Y chromosomes of all currently living hu
    See more on en.wikipedia.org · Text under CC-BY-SA license
  4. https://simple.wikipedia.org/wiki/Y_chromosome

    The Y chromosome is a chromosome that decides the sex in most mammals, including humans. It contains the gene SRY, which triggers testis development, so making an animal male or female. Normal females have two X chromosomes, and normal males have one X and one Y. An egg always carries a single X, while sperms carry either an X or a Y. That is how sex is determined …

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    • https://en.wikipedia.org/wiki/Y_chromosome_consortium

      From Wikipedia, the free encyclopedia (Redirected from Y chromosome consortium) The Y Chromosome Consortium ( YCC) was a collection of scientists who worked toward the understanding of human Y chromosomal phylogenetics and evolution.

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      • https://en.wikipedia.org/wiki/Y-chromosomal_Aaron

        Y-chromosomal Aaron is the name given to the hypothesized most recent common ancestor of the patrilineal Jewish priestly caste known as Kohanim (singular "Kohen", also spelled "Cohen"). According to the traditional understanding of the Hebrew Bible, this ancestor was Aaron, the brother of Moses.. While some early genetic studies were seen as possibly supporting the …

      • https://en.wikipedia.org/wiki/Chromosome

        A chromosome is a long DNA molecule with part or all of the genetic material of an organism. Most eukaryotic chromosomes include packaging proteins called histones which, aided by chaperone proteins, bind to and condense the DNA molecule to maintain its integrity. These chromosomes display a complex three-dimensional structure, which plays a ...

      • https://en.wikipedia.org/wiki/Haplogroup_G-M201

        From Wikipedia, the free encyclopedia This article is about the human Y-DNA haplogroup. For the human mtDNA haplogroup, see Haplogroup G (mtDNA). Haplogroup G ( M201) is a human Y-chromosome haplogroup. It is one of two branches of the …

      • https://en.wikipedia.org/wiki/XYY_syndrome

        XYY syndrome is a genetic condition in which a male has an extra Y chromosome. There are usually few symptoms. These may include being taller than average, acne, and an increased risk of learning disabilities. The person is generally otherwise normal, including typical rates of fertility. The condition is generally not inherited from a person's parents but rather occurs as a result of …

      • https://isogg.org/wiki/Y_chromosome/en

        Y chromosome/en/Image The human Y chromosome is a male-specific sex chromosome. Nearly all humans who possess a Y chromosome will be morphologically male.

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