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  4. The ratio 1 1 1 1 is expected as a result of

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Q. The ratio 1 1 1 1 is expected as a result of

AMUAMU 1998

Solution:

: Dihybrid test cross is obtained when dihybrid $ {{F}_{1}} $ plant is crossed with its recessive parent considering in two characters. By this cross the heterozygocity and homozygocity of the organisms can be tested.
Then, dihybrid test cross ratio is $ 1:1:1:1 $ . Likewise, monohybrid and trihybrid test cross ratio are $ 1:1 $ and $ 1:1:1:1:1:1:1:1 $ respectively.

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