Morgan, in his dihybrid crosses with dorsaphila observed deviation in the phenotypic ratio of F2 PR agency in comparison to that of Mendel, with the help of suitable example, explain how his results deviated from that of mendal.
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Answer:
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Explanation:
T.H. Morgan choose Drosophila Melanogaster for his experiments because
It is easily available on Banana or Mango fruits.
Inside the bottles flies can be reared.
A single mating can produce numerous individual within 2 weeks.
Morgan studied genes that were sex linked in Drosophila Melanogaster dihybrid cross.
Morgan crossed yellow bodied, white eyed females with brown bodied red eyed males.
Morgan then intercrossed their F1 Progeny.
Morgan found that the two genes did not segregate independently of each other.
He concluded with reference to Mendel's law that the F2 generation is different from the 9:3:3:1 ratio.
Morgan's results are deviated from that of Mendel due to the phenomena of linkage and recombination.
The genes which are tightly linked on the same chromosomes showed very less recombination. The genes which are loosely linked on the same chromosomes showed higher recombination.