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Differentiate Between Mendel’S Monohybrid Cross and Dihybrid Cross. - Science and Technology 2

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Differentiate between Mendel’s monohybrid cross and dihybrid cross.

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Solution

Monohybrid Cross Dihybrid Cross
A cross between two pure organisms to study the inheritance of a single pair of contrasting characters. A cross between two pure organisms to study the inheritance of two pairs of contrasting characters.
It produces a phenotypic monohybrid ratio 3:1 in the F2 generation. It produces a phenotypic dihybrid ratio 9:3:3:1 in the F2 generation.
It produces a genotypic ratio 1:2:1 in the F2 generation. It produces a genotypic ratio 1:2:1:2:4:2:1:2:1 in the F2 generation.
Example: Cross between tall and dwarf pea plants Example: Cross of pea plants with round and yellow seeds and plants with wrinkled and green seeds
Concept: Mendel’s Laws of Inheritance
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