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During the studies on genes in Drosopila...

During the studies on genes in Drosopila that were sex-linked T.H. Morgan found F2-populabon phenotypic ratios deviated from expected 9 : 3 : 3 : 1. Explain the conclusion he arrived at.

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Morgan attributed this due to the physical association or linkage of the two genes and coined the term to describe this physical association of genes on a chromosome and the term recombination to describe the generation of non- also found to est gere combinations. Morgan and his co-workers that even when genes were grouped on the same chromosomes, some genes were very tightly linked which showed very low recombination while others were loosely linked which showed higher recombination. For example, he found that genes for white and yellow body colour were tightly linked and showed only 1.3 percent recombination while white and miniature wing showed 37.2 percent recombination
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TRUEMAN BIOLOGY-GENETICS AND EVOLUTION -SECTION-C
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  2. (a) Name the scientist who called t-RNA an adapter molecule. (b) D...

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

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  4. Explain the mechanism of sex determination in insects like Drosophila ...

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  5. Who determines the sex of an unborn child? Mention whether temperature...

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  7. Study the given pedigree chart showing the pattern of blood group inhe...

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  8. a) Construct a complete transcription unit with promoter and terminato...

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  9. What is the genetic basis for proof that codon is a triplet?

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  10. Comment on the utility of variability in number of tandem repeats duri...

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  11. Describe the structure of an RNA polynucleotide chain having four diff...

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  12. Why are human females rarely haemophilic? Explain. How do haemophilic ...

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  13. In a maternity clinic, for some reasons the authorities are not able t...

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  14. a) Explain DNA polymorphism as the basis of genetic mapping of human g...

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  15. Explain codominance taking an example of human blood groups in the pop...

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  16. (a) State Hardy Weinberg principle. Name any two factors which affect ...

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  17. "A population has been exhibiting genetic equilibrium". Answer the fo...

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