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प्रश्न
What is recombination? Discuss the applications of recombination from the point of view of genetic engineering.
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उत्तर
The formation of new combinations of genes, either by crossing over or independent assortment is called recombination. Alfred Sturtevant used the frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes and ‘mapped’ their position on the chromosome. Today genetic maps are extensively used as a starting point in the sequencing of whole genomes as was done in the case of the Human Genome Sequencing Project.
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संबंधित प्रश्न
Distance between the genes and percentage of recombination shows ______.
Occasionally, a single gene may express more than one effect. The phenomenon is called ______.
Discuss why Drosophila has been used extensively for genetical studies.
The physical association of two or more genes located on the same chromosome, due to which they tend to be inherited together and do not assort independently, is called:
The process by which new non-parental combinations of genes are produced due to the exchange of genetic material between homologous chromosomes during meiosis is called:
Thomas Hunt Morgan conducted his experiments on linkage using which organism?
Which of the following is NOT a reason why Drosophila melanogaster was chosen for Morgan's linkage experiments?
How does linkage relate to Mendel's Law of Independent Assortment?
In Morgan's dihybrid crosses with Drosophila, the F₂ ratio deviated from the expected 9:3:3:1 ratio. Which genes were being studied in these crosses?
If two genes show a recombination frequency of 1.3%, which of the following statements is most accurate?
According to Morgan's data, genes showing 37.2% recombination (such as white and miniature wing genes) are classified as:
Which scientist, a student of Morgan, used recombination frequency to measure gene distances and create chromosome maps?
Crossing over during meiosis can separate linked genes. This process demonstrates that:
