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  • ICAR and TNAU E-Course Summarized

    Summarized Notes
  • Which term describes a normal female in human beings?

    Question: Which term describes a normal female in human beings?

    Options:

    Homogametic sex
    Heterogametic sex
    Hemizygous for a gene
    Gynandromorph

    ✅Explanation:
    A normal female in humans is considered homogametic because they have two X chromosomes (XX). Homogametic refers to the sex that produces the same type of gametes (sex cells) with respect to their sex chromosomes. In humans, females produce ova (egg cells) that always contain one X chromosome.

    • Here's why the other options are incorrect:
    ● b) Heterogametic sex: This refers to the sex that produces two different types of gametes with respect to their sex chromosomes. In humans, males are heterogametic because they produce sperm cells that can be either X or Y chromosomes, leading to offspring with XX (female) or XY (male) genotypes.
    ● c) Hemizygous for a gene: This describes an individual with only one copy of a particular gene on a sex chromosome. While some genes on the X chromosome might have hemizygosity in males (due to their single X), it's not a general characteristic of females.
    ● d) Gynandromorph: This refers to an individual exhibiting both male and female characteristics due to a developmental anomaly. It's not a typical description for a normal female.

    🛑 Related Terminology:
    ● Sex chromosomes: Chromosomes that determine an individual's sex (X and Y in humans).
    ● Gamete: A reproductive cell (sperm or egg) that fuses with another gamete to form a zygote.

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