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A non-haemophilic couple was informed by...

A non-haemophilic couple was informed by their doctor that there is possibility of a haemophilic child be born to them. Explain the basis on which the doctor conveyed this information. Give the genotypes and the phenotypes of all the possible children who could be born to them.

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When the female human is non-haemophilic but carrier and male is non haemophilic: they may have a haemophilic child.
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Haemophilia is a sex linked recessive disorder of humans. The pedigree chart given below shows the inheritance of Haemophilia in one family. Study the pattern of inheritance and answer the questions given. (a) Give all the possible genotypes of the members 4, 5 and 6 in the pedigree chart. (b) A blood test shows that the individual 14 is a carrier of haemophilia. The member numbered 15 has recently married the member numbered 14. What is the probability that their first child will be a haemophilic male ? Show with the help of Punnett square.

TRUEMAN BIOLOGY-GENETICS AND EVOLUTION -SECTION-C
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  2. What are types of sex-linkage?

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  3. A non-haemophilic couple was informed by their doctor that there is po...

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  4. What is 'semi- conservative' DNA replication ? How was it experimenta...

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  5. A homozygous tall pea plant with green seeds is crossed with a dwarf ...

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  6. Haemophilia is a sex linked recessive disorder of humans. The pedigree...

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  7. Inheritance pattern of ABO blood groups in humans shows dominance. cod...

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  8. (a) What is this diagram representing? (b) Name the parts a, b and c...

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  9. (a) In human genome which one of the chromosomes has the most genes an...

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  10. Study the pedigree chart given, showing the Inheritance pattern of blo...

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  11. Why are F(2) phenotypic and genotypic ratios same in a cross between r...

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  13. Why is tRNA called an adapter molecule?

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  14. (i) List the chromosomal disorders a human may suffer from if karyotyp...

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  15. How are dominance, codominance and incomplete dominance patterns of in...

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  16. A pea plant with purple flowers was crossed with white flowers produci...

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  17. (i) Name the enzyme that catalysis the transcription of hnRNA.

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  18. Unambiguous, universal and degenerate are some of the terms used for t...

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  19. (a) Name the scientist who called t-RNA an adapter molecule. (b) D...

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  20. During the studies on genes in Drosopila that were sex-linked T.H. Mor...

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