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A family of five daughters only is expec...

A family of five daughters only is expecting sixth issue. The chance of its beings a son is

A

Zero

B

`25%`

C

`50%`

D

`100%`

Text Solution

Verified by Experts

The correct Answer is:
C
Chances of a baby to be either boy or girl is always 50% because in human beings there are 22 pairs of autosome and one pair of sex chromosome. Female is homozygous while male is heterozygous and genetically responsible for sex of the child. Sperms are of two types, i.e. sperms having X-chromosome responsible for producing a girld and sperms having Y-chromosome responsible for producing a boy.
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-PRINCIPLES OF INHERITANCE AND VARIATION -MCQ
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  2. RR (red) Antirrhinum majus is crossed with white (rr) one. Offsprings ...

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  3. The allele which is unable to express its effect in the presence of an...

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  4. The contrasting pairs of factors in Mendelian crosses are called

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  5. First geneticist/father of genetics was

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  6. Mendel's last law is

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  7. A dihybrid condition is

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  8. A colour blind girl is rare because she will be only when :

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  9. Blue eye colour is recessive to brown eye colour. A brown eyed man who...

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  10. Multiple alleles control inheritance of

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  11. Which one is a hereditary disease?

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  12. Haemophilia is more common in males because it is a

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  13. Both husband and wife have normal vision though their father were colo...

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  14. In Down 's syndrome of a male child , the sex complement is

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  15. When an albino female plnt of maize is crossed with normal green male ...

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  16. Two linked genes a nad b show 20% recombination the indivsuls of a hyb...

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  17. Diploid chromosome number in humans is :

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  18. A family of five daughters only is expecting sixth issue. The chance o...

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  19. Which of the following contributed to the success of Mendel?

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  20. Haploids are able to express both recessive and dominant alleles /muta...

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