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What is the genetic makeup of normal human female?

What is the genetic makeup of normal human female? Correct Answer XX Chromosome

The correct answer is XX Chromosome.

Key Points

  • Humans have one pair of allosomes.
  • X and Y are one pair of sex chromosomes.
  • These chromosomes contain genes that determine the biological sex of an organism.
  • In the XY sex-determination system, the female-provided ovum contributes an X chromosome.
  • The male-provided sperm contributes either an X chromosome or a Y chromosome.
  • Thus resulting in female (XX) or male (XY) offspring, respectively.
  • Thus the genetic makeup of a normal human female is XX chromosome.

Additional Information

  • An autosome is any of the numbered chromosomes, as opposed to the sex chromosomes.
  • All the chromosomes other than the sex hormones are autosomes.
  • Chromosomes is a thread-like structure found in the nucleus. It becomes visible during cell division.
  • In Humans, there are 23 pairs of  chromosomes in total (46 chromosomes)
  • 22 pairs of autosomes (total 44) and one pair of allosomes.
  • An allosome is a sex chromosome that differs in size, form, and behaviour from an autosome.

Important Points

  • XXY Chromosome: Klinefelter syndrome.
    • A genetic condition in which a male is born with an extra copy of the X chromosome.
  • XO Chromosome: Turner syndrome.
    • A chromosomal disorder in which a female is born with only one X chromosome.
    • Symptoms include short stature, delayed puberty, infertility, heart defects and certain learning disabilities.

Related Questions

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