In the $F_{2}$ generation of a cross, progeny having different traits are produced in the ratio 3 : 1. State whether it is a monohybrid cross or a dihybrid cross ? Give one example of such a cross.

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Solution

It is a monohybrid cross. Example – when two hybrids tall pea plants cross bred with each other, they will produce three tall plants and one dwarf plant in $F_{2}$ generation.

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Q. A cross between two individuals results in a ratio of 9 : 3 : 3 : 1 for four possible phenotypes of progeny. This is an example of a :
(a) dihybrid cross
(b) monohybrid cross
(c) test cross
(d) none of these

Q. (a) What will you get in the F₁ and F₂ generations in the following cross?
Pure tall pea plant × Pure dwarf pea plant
(b) It it an example of monohybrid cross or dihybrid cross?

In the $F_{2}$ generation of a cross, progeny having different traits are produced in the ratio 3 : 1. State whether it is a monohybrid cross or a dihybrid cross ? Give one example of such a cross.

Q. In the

F_{2}

generation of a cross,

3 : 1

. State whether it is a monohybrid progeny having different traits are produced in the ratio cross or a dihybrid cross ? Give one example of such a cross.

Q. Short / Long answer type questions.
Explain a monohybrid cross taking seed Coat colour as a trait in Pisum sativum. Work out the cross up to F2 generation. (b) State the laws of inheritance that can be derived from such a cross. (c) How is the phenotypic ratio of F2 generation different in a dihybrid cross?

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In the F2 generation of a cross, progeny having different traits are produced in the ratio 3 : 1. State whether it is a monohybrid cross or a dihybrid cross ? Give one example of such a cross.

It is a monohybrid cross. Example – when two hybrids tall pea plants cross bred with each other, they will produce three tall plants and one dwarf plant in F2 generation.

In the $F_{2}$ generation of a cross, progeny having different traits are produced in the ratio 3 : 1. State whether it is a monohybrid cross or a dihybrid cross ? Give one example of such a cross.

It is a monohybrid cross. Example – when two hybrids tall pea plants cross bred with each other, they will produce three tall plants and one dwarf plant in $F_{2}$ generation.