Phenotypic ratio obtained in quantitative inheritance of a dihybrid cross is

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4.Principles of Inheritance and Variation

normal

The phenotypic ratio obtained in quantitative inheritance of a dihybrid cross is

$1 : 2 : 1$

$1 : 4 : 6 : 4 : 1$

$1 : 6 : 15\ 20 : 15 : 6 : 1$

$9 : 3 : 3 : 1$

Solution

(b)Ratio $1 : 4 : 6 : 4 : 1$ it is due to two pairs of genes. But if it is due to $3$ pairs of genes, the size ratio shall be $1 : 6 : 15 : 20 : 15 : 6 : 1.$

Standard 12

Biology

In Drosophila, the sex is determined by

normal

(AIPMT-2003)

Traits controlled by genes located on autosomes are said to be

normal

Antisera used to detect $Rh$ blood group

normal

Heterozygous tall and violet flowered pea plants were selfed and total $512$ seeds are collected. What will be total number of seeds for both heterozygous traits?

normal

$A$ : Occasionally mammary glands are functional in males and the condition is called gynaecomastia.

$R$ : Decreased testosterone in later life may also lead to gynaecomastia. It is usually due to perturbation of estrogen to androgen ratio.

normal

The phenotypic ratio obtained in quantitative inheritance of a dihybrid cross is

Solution

Similar Questions

In Drosophila, the sex is determined by

Traits controlled by genes located on autosomes are said to be

Antisera used to detect $Rh$ blood group

Heterozygous tall and violet flowered pea plants were selfed and total $512$ seeds are collected. What will be total number of seeds for both heterozygous traits?

$A$ : Occasionally mammary glands are functional in males and the condition is called gynaecomastia. $R$ : Decreased testosterone in later life may also lead to gynaecomastia. It is usually due to perturbation of estrogen to androgen ratio.

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$A$ : Occasionally mammary glands are functional in males and the condition is called gynaecomastia.

$R$ : Decreased testosterone in later life may also lead to gynaecomastia. It is usually due to perturbation of estrogen to androgen ratio.