• UGI USER
  • Aug 28, 2024
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STUDY REVEALS Y CHROMOSOME SHRINKING: IMPLICATIONS FOR HUMAN REPRODUCTION

Why in the news?

The shrinking Y chromosome ought to reshape human replica, doubtlessly main to the emergence of latest sex-figuring out structures or separate human species, as indicated by evolutionary adjustments in different animals.

source:scribd

About the Y Chromosome Decline:

  • Recent studies highlights the sluggish shrinking of the Y chromosome, essential for male intercourse willpower.
  • Over millions of years, the Y chromosome has drastically gotten smaller, raising worries approximately its capacity disappearance.
  • The study, posted in Proceedings of the National Academy of Sciences, notes that spiny rats have developed new male-figuring out genes, suggesting a likely evolutionary course for human beings.

Evolutionary Insights:

  • Professor Jenny Graves explains that the reduction in Y chromosome size has been ongoing for hundreds of thousands of years.
  • The platypus, with an XY pair akin to ordinary chromosomes, indicates that mammalian X and Y chromosomes have been once similar.
  • The Y chromosome has misplaced 900 to 55 active genes over 166 million years, doubtlessly main to its entire disappearance in around 11 million years.
What is Y Chromosome ?

  • The Y chromosome is one in all two sex chromosomes in humans, paired with the X chromosome.
  • It is small, containing about 50 to 60 genes and a couple of 2% of total DNA.
  • Males have one X and one Y chromosome; ladies have  X chromosomes.

Genes on Y Chromosome:

  • Focuses on male sex willpower and development.
  • Contains the Sex-Determining Region Y (SRY) gene, vital for male development.
  • Fewer genes compared to the X chromosome; generally involved in male-specific traits and fertility.

Genetic Disorders:

  • Mutations or deletions can result in genetic issues or male infertility.
  • Example: Deletions in the AZF place can affect sperm production.

What is a chromosome?

  • Definition: A chromosome is a thread-like shape composed of DNA and proteins.
  • Location: Found within the nucleus of eukaryotic cells.
  • Function: Essential for storing and transmitting genetic records across generations.

Associated Article:

https://universalinstitutions.com/the-role-of-x-chromosome-in-auto-immune-diseases/