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What is sex-determination?Explain XX and...

What is sex-determination?Explain XX and XY type of sex determination.

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### Step-by-Step Solution: **Step 1: Define Sex Determination** Sex determination is the biological mechanism that determines the gender of an individual organism. It involves the combination of sex chromosomes inherited from the parents. **Step 2: Understand Chromosomes in Humans** Humans have a total of 46 chromosomes, which include 44 autosomes and 2 sex chromosomes. The sex chromosomes are responsible for determining the sex of the individual. ...
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MODERN PUBLICATION-PRINCIPLES OF INHERITANCE AND VARIATION-REVISION EXERCISES (SHORT ANSWER TYPE-I(A. QUESTIONS FROM STATE BOARD EXAMINATIONS))
  1. What are multiple alleles?Give one example.

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  2. Differentiate between back cross and test cross.

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  3. What are point mutations?Give one example of point mutations

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  4. Differentiate between homozygous and heterozygous organisms.

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  5. What is pleiotropy ?Give one example?

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  6. What is sex-determination?Explain XX and XY type of sex determination.

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  7. What is back cross?Explain with example.

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  8. What is co-dominance ?Explain it by citing a suitable example.

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  9. Examine the following fragment of beta globin chain in human haemoglob...

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  10. What do you mean by pleiotropy ?Give example.

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  11. Distinguish between homozygous and heterozygous.

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  12. (a)Observe the above cross and name the phenomenon. (b)Write down th...

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  13. A man with blood group A marries a woman with blood group B.What will ...

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  14. What do you mean by incomplete dominance ?Give example.

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  15. Write a short note on Klinefelter's syndrome.

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  16. Write a short note on Down's syndrome.

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  17. Mention two differences between homozygous and heterozygous individual...

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  18. What are test cross and back cross?

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  19. How many X chromosome (s) and autosomes are present in human ovum?

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  20. Give the genotypic and phenotypic ratio of F(1), generation,when a hyb...

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