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Albinism is known to be due to an autosomal recessive mutation. The first child of a couple with normal skin pigmentation was an albino. What is the probability that their second child will also be an - Biology

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प्रश्न

Albinism is known to be due to an autosomal recessive mutation. The first child of a couple with normal skin pigmentation was an albino. What is the probability that their second child will also be an albino?

विकल्प

  • 100%

  • 25%

  • 50%

  • 75%

MCQ
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उत्तर

25%

Explanation:

Since albinism is an autosomal recessive trait, the parents must both be heterozygous carriers (e.g., Aa) to have a child who is albino (aa). The cross between two carriers (Aa × Aa) yields a 25% chance of an albino offspring (aa), as the inheritance of each child is an independent event.

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संबंधित प्रश्न

Assertion (A): Gamma rays are generally used to induce mutation in wheat varieties.

Reason (R): Because they carry lower energy to non-ionize electrons from atom


Rate of mutation is affected by ______.


Which one of the following is a sort of chromosomal aberration?


How does a mutagen induce mutation? Explain with example.


Match list I with list II.

List I List II
A. A pair of chromosomes extra with diploid i) monosomy
B. One chromosome extra to the diploid ii) tetrasomy
C. One chromosome loses from diploid iii) trisomy
D. Two individual chromosomes lose from diploid iv) double monosomy

Match list I with list II

List I List II
A. A pair of chromosomes extra with diploid i) monosomy
B. One chromosome extra to the diploid ii) tetrasomy
C. One chromosome was lost from diploid iii) trisomy
D. Two individual chromosomes lose from diploid iv) double monosomy

Match List I with List II.

List I List II
A. A pair of chromosomes extra with diploid i) monosomy
B. One chromosome extra to the diploid ii) tetrasomy
C. One chromosome loses from diploid iii) trisomy
D. Two individual chromosomes lose from diploid iv) double monosomy

Match list I with list II.

List I List II
A. A pair of chromosomes extra with diploid i) monosomy
B. One chromosome extra to the diploid ii) tetrasomy
C. One chromosome loses from diploid iii) trisomy
D. Two individual chromosomes lose from diploid iv) double monosomy

Match list I with list II

List I List II
A. A pair of chromosomes extra with diploid (i) monosomy
B. One chromosome extra to the diploid (ii) tetrasomy
C. One chromosome loses from diploid (iii) trisomy
D. Two individual chromosomes lose from diploid (iv) double monosomy

Match list I with list II

  List I   List II
A. A pair of chromosomes extra with diploid i) monosomy
B. One chromosome extra to the diploid ii) tetrasomy
C. One chromosome loses from diploid iii) trisomy
D. Two individual chromosomes lose from diploid iv) double monosomy

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