In corn plant, the allele for tall plant (T) is dominant to small plant (t) and coloured seed (C) is dominant to (c). In a particular cross, the probability of offspring being tall is ½ and being coloured is ¾, which of the following will produce such progeny?

    1. TTCc and ttCc
    2. TTCc and TtCc
    3. TtCc and ttCc
    4. TTCC and ttCC

Subtopic:  Dihybrid Cross: Details |
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In humans, Albinism (c) is recessive to normal condition (C). If two heterozygous parents have a progeny. What is the probability that it will be albino.

    1. ¾
    2. ½
    3. ¼
    4. 1
Subtopic:  Dihybrid Cross: Details |
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If a normal child is born to normal parents who are heterozygous for albinism. What is the probability of normal child being heterozygote?

    1. 2/3
    2. 1/4
    3. 1/2
    4. 1/6
Subtopic:  Dihybrid Cross: Details |
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If normal parents have an albino, what is the probability that their next child will be normal?

    1. ¾
    2. ½
    3. 1/3
    4. 1/5
Subtopic:  Dihybrid Cross: Details |
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Cross between two parents of genotype- (male) AaBbccDdee and (female) AabbCcDdee will give progenies out of which how many will have same genotype as that of female parent?

    1. 1/8
    2. 1/32
    3. 1/16
    4. ¼
Subtopic:  Dihybrid Cross: Details |
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Number of different types of gametes produced by genotype AABBCCDDEEFFGGHH will be

a. 20

b. 2

c. 102

d. zero

Subtopic:  Dihybrid Cross: Details |
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In humans, curly hair is dominant (C) to straight hair (c). A woman who is heterozygote for curly hair marries to a normal man. What will be the probability of first and second child having curly hair?

    1. ¼
    2. ½
    3. 1/8
    4. 1/6
Subtopic:  Dihybrid Cross: Details |
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Coloured endosperm (C) is dominant to colourless endosperm (c) while smooth seeds (S) are dominant to wrinkled seed (s) and Waxy endosperm (W) is dominant to starchy endosperm (w). What is the genotype of Homozygous colourless, smooth and waxy endosperm and homozygous coloured, wrinkled and starchy endosperm?

a. ccSSWW and CCssWW

b. ccSSWW and CCssww

c. CCSSWW and CCssww

d. ccSSWW and CCSSww

Subtopic:  Dihybrid Cross: Details |
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Coloured endosperm (C) is dominant to colourless endosperm (c) while smooth seeds (S) are dominant to wrinkled seed (s) and Waxy endosperm (W) is dominant to starchy endosperm (w). Cross is made between pure dominant trait and pure recessive trait parents, what will be the genotype of F2 progenies that will be coloured wrinkled and waxy?

    1. CCssWW
    2. CCssWw and CcssWw
    3. CcssWW
    4. All the above options are correct.
Subtopic:  Dihybrid Cross: Details |
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Coloured endosperm (C) is dominant to colourless endosperm (c) while smooth

seeds (S) are dominant to wrinkled seed (s) and Waxy endosperm (W) is dominant

to starchy endosperm (w).what will be the ratio of F2 progenies that will be

coloured wrinkled and waxy? 

1. 9/64 

2. 1/64 

3. 3/64 

4. 7/64

Subtopic:  Dihybrid Cross: Details |
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