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What are types of sex-linkage?...

What are types of sex-linkage?

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Types of sex-linkage
(i)Diagynic. The sex linked genes are present on the non-homologous part of X-chromosome and are passed on from father to grandson through daughters of F generation.
(ii) Diandric. The mother transfers traits to her grand daughter through her son
(iii) Hologynic. Character is passed directly from mother to daughter
(iv) Holandric. Genes which are in the non-homologous part of Y chromosome are passed on directly from father to son
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TRUEMAN BIOLOGY-GENETICS AND EVOLUTION -SECTION-C
  1. A 3' 5' B C 5' 3'D AB and CD represent two strands of a DNA mol...

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  2. In the following diagram the two DNA strands represented are ready for...

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  3. What are types of sex-linkage?

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

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

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

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

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

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

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

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

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

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  13. (i) Why are grasshopper and Drosophila said to show male heterogamety ...

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  14. Why is tRNA called an adapter molecule?

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

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

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

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

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

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

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