Dictionary > Y-linked gene

Y-linked gene

noun, plural: Y-linked genes
A gene located on the Y chromosome
Y chromosome is the male chromosome of many animals, such as mammals, including humans. It bears genes that are essentially passed on from the father to the son or the male offspring. The chromosome is responsible for the manifestation of male traits. One of the genes associated with sex determination is the SRY gene (Sex-determining Region Y gene). The gene codes for a protein that initiates the testicular development in male mammals. Other sex-determining genes present in Y chromosome are those in the Azoospermia factor (AZF) region. These genes (e.g. AZF1 and AZF2) are involved in sperm production. The lack of AZF1, for instance, was associated with the failure to produce sperm. Apart from sex-determining genes, there are also other genes that y chromosome bear. One of them is the SOX21 gene, which codes for the transcription factor SOX-21 protein. This protein is associated with baldness or hair loss. Other genes found in the Y chromosome include acetylserotonin methyltransferase, zinc finger protein, amelogenin, interleukin-3 receptor, etc.
Since Y chromosome is passed on from the father to the son there are traits acquired through patrilineal inheritance. An example is the hypertrichosis of ears wherein the trait characterized by having hairy ears is passed on from the father to the male offspring.

  • Holandric gene

See also:

  • Y-linked inheritance
  • Y-linkage
  • Y chromosome
  • SRY gene

    You will also like...

    Young plant growing from the soil.

    Nutrients in the soil are essential to the proper growth of a land plant. This tutorial deals with the properties of soi..

    Salmon jumping upstream in the river
    Lotic Communities & Animals

    A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..

    Developmental Biology
    Developmental Biology

    Developmental biology is a biological science that is primarily concerned with how a living thing grows and attains matu..

    Psychiatry and mental disorders
    Psychiatry & Mental Disorders

    Different mental disorders are described here. Read this tutorial to get an overview of schizophrenia, affective mood di..

    Disturbance on a still water
    Abiotic Factors – Water Conditions

    A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..

    An artistic depiction of Dunkleosteus fish

    The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..