Morgan carried out several dihybrid crosses in Drosophila and found F2-ratios deviated very significantly from the expected Mendelian ratio. Explain his findings with the help of an example.
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Answer:
by Morgan's experiment he concluded that,
the tight linkage shows less recombination and
loose linkage shows high recombination
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Morgan found the deviation of his results from Mendelian genetics because of the linkage.
Explanation:
- Gregor Johann Mendel was the father of genetics.
- Mendel worked on characters of pea plants an hybridized them to get hybrid offsprings.
- But the characters he chose was luckily on different chromosomes.
- So he didn't suffer any problems due to linkage.
- But Morgan chose the characters of drosophila which were on the same chromosome.
- So this resulted in linkage.
- The linkage led effect to the separation and independent assortment of the genes in offsprings.
- So his results varied with that of Mendel’s results.
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