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Basic Science Genetics Linkage And Crossing Over

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1. Linkage is maize was reported by




2. The genes located on the same Chromosome that are inherited together are known as




3. In maize parental and recombinations are produced in the ratio of




4. The scientists who proved that Mendel's law of independent assortment is not universal




5. The adjacent non-sister chromatid remain in contact at certain points called




6. Linkage is clear in




7. Genes located on the same Chromosome do not separate independently because of




8. Coupling and repulsion are experimented on fruit fly by




9. Pairing of homologous chromosomes is called




10. The scientist who considered that the genes carried on the same chromosome remain linked as a group and are transmitted together through the gametes to the offspring




11. The scientist who discovered that coupling and repulsion are two aspects of a single phenomenon called linkage is




12. Due to linkage in maize, the number of colourless shrunken seeds produced are




13. The Zoological name of fruit fly is




14. Coupling and repulsion are two aspects of same phenomenon called




15. Homologous chromosomes exchange corresponding segments between non-sister chromatids during




16. When two different genes come from the same parent they tend to remain together is called




17. Linkage is usually




18. Due to linkage in maize, the number of coloured shrunken seeds produced are




19. In maize the genotype of colourless full seeds in




20. Linkage usually gets broken due to




21. During crossing over, exchange of chromosomal or genetic material takes place between




22. In maize the genotype of coloured full seeds is




23. The tendency of two different genes to remain apart if they come from two different parents is




24. Recombination of linked genes is accomplished by




25. The genotype of colourless shrunken seeds in maize is




26. Crossing Over occurs when the homologous chromosomes contain




27. The ratio obtained by Bateson and Punnet when they test crossed second time between blue long and red round in sweet pea




28. The ratio observed by Bateson and Punnet when they test crossed in sweet pea between BbLl and bbll was




29. The number of Chromosomal pairs in Drosophila melanogaster is




30. Crossing over plays an important role in the process of




31. Mutation helps for




32. New combination of genes are produced due to




33. The mechanism that provides the basis for new varieties of plant is




34. An important criterion for evolution of organisms is