3 It expresses both in homozygous and heterozygous condition
4 It never expressed in any condition
Explanation:
A dominant gene is a gene which can express in both condition (Homozygous and Heterozygous) For example- TT (Tall) (Homozygous) and \(\mathrm{Tt}\) (tall) (Heterozygous) In both condition, tall plant express because ' \(\mathrm{T}\) ' is dominant Note - Phenotypically both plant are tall but genotypically differ to each other
AIPMT-2002
Principle of Inheritance and Variation
184425
A homozygous red flower is crossed with recessive white. Red is dominant over white. The progeny in the \(F_{1}\) generation will be:
1 all red
2 all white
3 \(50 \%\) red and \(50 \%\) white
4 \(75 \%\) red \(50 \%\) white
Explanation:
Exp: The red colour of flower dominates upon white colour of flower. In the present varieties both parents are of pare variety therefore, the offspring will be all red flowered.
BVP-2004
Principle of Inheritance and Variation
184427
Incomplete dominance is found in
1 Pisum sativum
2 Antirrhinum majus
3 Both (a) and (b)
4 None of the above
Explanation:
Incomplete dominance is a condition in which a dominant allele does not completely mask the effects of a recessive allele. Ex - in Snapdragon i.e Antirrhinum majus, the flower colour is controlled by incomplete dominance. The Antirrhinum flower has 2 flower colours, Red (RR) and white ( \(\mathrm{rr}\) ). When cross pollination occurs between red and white flowers, a pink, antirrhinum flower \((\mathrm{Rr})\) is produced.
CG PMT-2005
Principle of Inheritance and Variation
184428
If a cross between two individuals produces offsprings with \(50 \%\) dominant character and \(50 \%\) recessive character the genotype of parents are
1 \(\mathrm{Aa} \times \mathrm{Aa}\)
2 \(\mathrm{Aa} \times \mathrm{aa}\)
3 \(\mathrm{AA} \times\) aa
4 \(\mathrm{AA} \times \mathrm{Aa}\)
Explanation:
If a cross between 2 individuals produces offspring with \(50 \%\) dominant character and \(50 \%\) recessive character the genotype of parents are - \(\mathrm{Aa} \times\) aa The phenotypic ratio is \(2: 2\) i.e \(1: 1\)
3 It expresses both in homozygous and heterozygous condition
4 It never expressed in any condition
Explanation:
A dominant gene is a gene which can express in both condition (Homozygous and Heterozygous) For example- TT (Tall) (Homozygous) and \(\mathrm{Tt}\) (tall) (Heterozygous) In both condition, tall plant express because ' \(\mathrm{T}\) ' is dominant Note - Phenotypically both plant are tall but genotypically differ to each other
AIPMT-2002
Principle of Inheritance and Variation
184425
A homozygous red flower is crossed with recessive white. Red is dominant over white. The progeny in the \(F_{1}\) generation will be:
1 all red
2 all white
3 \(50 \%\) red and \(50 \%\) white
4 \(75 \%\) red \(50 \%\) white
Explanation:
Exp: The red colour of flower dominates upon white colour of flower. In the present varieties both parents are of pare variety therefore, the offspring will be all red flowered.
BVP-2004
Principle of Inheritance and Variation
184427
Incomplete dominance is found in
1 Pisum sativum
2 Antirrhinum majus
3 Both (a) and (b)
4 None of the above
Explanation:
Incomplete dominance is a condition in which a dominant allele does not completely mask the effects of a recessive allele. Ex - in Snapdragon i.e Antirrhinum majus, the flower colour is controlled by incomplete dominance. The Antirrhinum flower has 2 flower colours, Red (RR) and white ( \(\mathrm{rr}\) ). When cross pollination occurs between red and white flowers, a pink, antirrhinum flower \((\mathrm{Rr})\) is produced.
CG PMT-2005
Principle of Inheritance and Variation
184428
If a cross between two individuals produces offsprings with \(50 \%\) dominant character and \(50 \%\) recessive character the genotype of parents are
1 \(\mathrm{Aa} \times \mathrm{Aa}\)
2 \(\mathrm{Aa} \times \mathrm{aa}\)
3 \(\mathrm{AA} \times\) aa
4 \(\mathrm{AA} \times \mathrm{Aa}\)
Explanation:
If a cross between 2 individuals produces offspring with \(50 \%\) dominant character and \(50 \%\) recessive character the genotype of parents are - \(\mathrm{Aa} \times\) aa The phenotypic ratio is \(2: 2\) i.e \(1: 1\)
3 It expresses both in homozygous and heterozygous condition
4 It never expressed in any condition
Explanation:
A dominant gene is a gene which can express in both condition (Homozygous and Heterozygous) For example- TT (Tall) (Homozygous) and \(\mathrm{Tt}\) (tall) (Heterozygous) In both condition, tall plant express because ' \(\mathrm{T}\) ' is dominant Note - Phenotypically both plant are tall but genotypically differ to each other
AIPMT-2002
Principle of Inheritance and Variation
184425
A homozygous red flower is crossed with recessive white. Red is dominant over white. The progeny in the \(F_{1}\) generation will be:
1 all red
2 all white
3 \(50 \%\) red and \(50 \%\) white
4 \(75 \%\) red \(50 \%\) white
Explanation:
Exp: The red colour of flower dominates upon white colour of flower. In the present varieties both parents are of pare variety therefore, the offspring will be all red flowered.
BVP-2004
Principle of Inheritance and Variation
184427
Incomplete dominance is found in
1 Pisum sativum
2 Antirrhinum majus
3 Both (a) and (b)
4 None of the above
Explanation:
Incomplete dominance is a condition in which a dominant allele does not completely mask the effects of a recessive allele. Ex - in Snapdragon i.e Antirrhinum majus, the flower colour is controlled by incomplete dominance. The Antirrhinum flower has 2 flower colours, Red (RR) and white ( \(\mathrm{rr}\) ). When cross pollination occurs between red and white flowers, a pink, antirrhinum flower \((\mathrm{Rr})\) is produced.
CG PMT-2005
Principle of Inheritance and Variation
184428
If a cross between two individuals produces offsprings with \(50 \%\) dominant character and \(50 \%\) recessive character the genotype of parents are
1 \(\mathrm{Aa} \times \mathrm{Aa}\)
2 \(\mathrm{Aa} \times \mathrm{aa}\)
3 \(\mathrm{AA} \times\) aa
4 \(\mathrm{AA} \times \mathrm{Aa}\)
Explanation:
If a cross between 2 individuals produces offspring with \(50 \%\) dominant character and \(50 \%\) recessive character the genotype of parents are - \(\mathrm{Aa} \times\) aa The phenotypic ratio is \(2: 2\) i.e \(1: 1\)
3 It expresses both in homozygous and heterozygous condition
4 It never expressed in any condition
Explanation:
A dominant gene is a gene which can express in both condition (Homozygous and Heterozygous) For example- TT (Tall) (Homozygous) and \(\mathrm{Tt}\) (tall) (Heterozygous) In both condition, tall plant express because ' \(\mathrm{T}\) ' is dominant Note - Phenotypically both plant are tall but genotypically differ to each other
AIPMT-2002
Principle of Inheritance and Variation
184425
A homozygous red flower is crossed with recessive white. Red is dominant over white. The progeny in the \(F_{1}\) generation will be:
1 all red
2 all white
3 \(50 \%\) red and \(50 \%\) white
4 \(75 \%\) red \(50 \%\) white
Explanation:
Exp: The red colour of flower dominates upon white colour of flower. In the present varieties both parents are of pare variety therefore, the offspring will be all red flowered.
BVP-2004
Principle of Inheritance and Variation
184427
Incomplete dominance is found in
1 Pisum sativum
2 Antirrhinum majus
3 Both (a) and (b)
4 None of the above
Explanation:
Incomplete dominance is a condition in which a dominant allele does not completely mask the effects of a recessive allele. Ex - in Snapdragon i.e Antirrhinum majus, the flower colour is controlled by incomplete dominance. The Antirrhinum flower has 2 flower colours, Red (RR) and white ( \(\mathrm{rr}\) ). When cross pollination occurs between red and white flowers, a pink, antirrhinum flower \((\mathrm{Rr})\) is produced.
CG PMT-2005
Principle of Inheritance and Variation
184428
If a cross between two individuals produces offsprings with \(50 \%\) dominant character and \(50 \%\) recessive character the genotype of parents are
1 \(\mathrm{Aa} \times \mathrm{Aa}\)
2 \(\mathrm{Aa} \times \mathrm{aa}\)
3 \(\mathrm{AA} \times\) aa
4 \(\mathrm{AA} \times \mathrm{Aa}\)
Explanation:
If a cross between 2 individuals produces offspring with \(50 \%\) dominant character and \(50 \%\) recessive character the genotype of parents are - \(\mathrm{Aa} \times\) aa The phenotypic ratio is \(2: 2\) i.e \(1: 1\)
