If the offspring is aa, what possible combination of parental genotype would have produced these progenies?

(1) AA and aa

(2) Aa and AA

(3) aa and AA

(4) Aa and Aa

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

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

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

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

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

Number of different types of gametes produced by genotype AABBCCDDEEFFGGHH will be

a. 2⁰

b. 2

c. 10²

d. zero

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

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

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.