184698
Which genotype will indicate colour blindness in male?
1 \(\mathrm{X}^6 \mathrm{Y}\)
2 \(\mathrm{X}^{\text {C }}\)
3 \(\mathrm{X}^c \mathrm{Y}^c\)
4 \(\mathrm{X} \mathrm{Y}^{\circ}\)
Explanation:
: \(\mathrm{X}^{\text {c } Y}\) genotype will indicate coloublindness in males. The gene for red-green colourblindnes is located on X chromosome. Coloublindress is recessive to normal vision and is found more after in man. - \(\mathrm{X}^c \mathrm{X}^c\)-indicate colourblind female. - \(\mathrm{XX}^c\)-indicate carrier female.
Haryana PMT-2002
Principle of Inheritance and Variation
184710
If a man who is colour blind marries a woman who is pure normal for colour vision, the chances of their sons having colour blindness is:
1 \(100 \%\)
2 \(50: 50\)
3 \(0 \%\) (zero)
4 \(75: 25\)
Explanation:
: If a man who is colourblind marries a woman who is pure normal for colour wision, the chances of their sons having colour blindness is zero percent.
Rajasthan PMT-2006
Principle of Inheritance and Variation
184711
The main cause of Edyward syndrome Patau syndrome and Bown syndrome is :
1 mutation of gene
2 change in both autosomes and heterosomes
3 change in autosomes
4 change in heterosomes
Explanation:
: The main cause of Etward syndrome, Patau syndrome and Down syndrome is change in autosomes. - Edward syntrome 47(45 + XY/XX). It is trisomy of chromosome 18. - Patau syndrome \(47(45+\mathrm{XY} / \mathrm{XX})\) : trisony of chromosome 13. - Down syndrome \(47(45+\mathrm{XY} / \mathrm{XX})\) trisony of chromosome-21.
Manipal-2010/MGIMS Wardha-2003
Principle of Inheritance and Variation
184729
A bald headed ( Bb ) man marries a non-bald woman (Bb), their progeny if all are females, the probable bald to non-bald ratio in their progency would be:
1 \(1: 1\)
2 \(3: 1\)
3 \(1: 3\)
4 \(2: 1\)
Explanation:
: Baldness may occur due to radiation effects, thyroid irregularities and other reasons, but a particular type pattem baldness is hereditary. Hereditary baldness is carried by a dominant autosomal gene, say B. All homozygous BB are bald whether these are men or women. Similarly, homozygous (bb) men and women are always non-bald. In case of heterozygous baldness develops only in men and never in women, because the single dominant gene \(\mathbf{B}\) expresses itself only when push of male hormones is available. Pattern Baldness is example of sex influence trait cisorder
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Principle of Inheritance and Variation
184698
Which genotype will indicate colour blindness in male?
1 \(\mathrm{X}^6 \mathrm{Y}\)
2 \(\mathrm{X}^{\text {C }}\)
3 \(\mathrm{X}^c \mathrm{Y}^c\)
4 \(\mathrm{X} \mathrm{Y}^{\circ}\)
Explanation:
: \(\mathrm{X}^{\text {c } Y}\) genotype will indicate coloublindness in males. The gene for red-green colourblindnes is located on X chromosome. Coloublindress is recessive to normal vision and is found more after in man. - \(\mathrm{X}^c \mathrm{X}^c\)-indicate colourblind female. - \(\mathrm{XX}^c\)-indicate carrier female.
Haryana PMT-2002
Principle of Inheritance and Variation
184710
If a man who is colour blind marries a woman who is pure normal for colour vision, the chances of their sons having colour blindness is:
1 \(100 \%\)
2 \(50: 50\)
3 \(0 \%\) (zero)
4 \(75: 25\)
Explanation:
: If a man who is colourblind marries a woman who is pure normal for colour wision, the chances of their sons having colour blindness is zero percent.
Rajasthan PMT-2006
Principle of Inheritance and Variation
184711
The main cause of Edyward syndrome Patau syndrome and Bown syndrome is :
1 mutation of gene
2 change in both autosomes and heterosomes
3 change in autosomes
4 change in heterosomes
Explanation:
: The main cause of Etward syndrome, Patau syndrome and Down syndrome is change in autosomes. - Edward syntrome 47(45 + XY/XX). It is trisomy of chromosome 18. - Patau syndrome \(47(45+\mathrm{XY} / \mathrm{XX})\) : trisony of chromosome 13. - Down syndrome \(47(45+\mathrm{XY} / \mathrm{XX})\) trisony of chromosome-21.
Manipal-2010/MGIMS Wardha-2003
Principle of Inheritance and Variation
184729
A bald headed ( Bb ) man marries a non-bald woman (Bb), their progeny if all are females, the probable bald to non-bald ratio in their progency would be:
1 \(1: 1\)
2 \(3: 1\)
3 \(1: 3\)
4 \(2: 1\)
Explanation:
: Baldness may occur due to radiation effects, thyroid irregularities and other reasons, but a particular type pattem baldness is hereditary. Hereditary baldness is carried by a dominant autosomal gene, say B. All homozygous BB are bald whether these are men or women. Similarly, homozygous (bb) men and women are always non-bald. In case of heterozygous baldness develops only in men and never in women, because the single dominant gene \(\mathbf{B}\) expresses itself only when push of male hormones is available. Pattern Baldness is example of sex influence trait cisorder
184698
Which genotype will indicate colour blindness in male?
1 \(\mathrm{X}^6 \mathrm{Y}\)
2 \(\mathrm{X}^{\text {C }}\)
3 \(\mathrm{X}^c \mathrm{Y}^c\)
4 \(\mathrm{X} \mathrm{Y}^{\circ}\)
Explanation:
: \(\mathrm{X}^{\text {c } Y}\) genotype will indicate coloublindness in males. The gene for red-green colourblindnes is located on X chromosome. Coloublindress is recessive to normal vision and is found more after in man. - \(\mathrm{X}^c \mathrm{X}^c\)-indicate colourblind female. - \(\mathrm{XX}^c\)-indicate carrier female.
Haryana PMT-2002
Principle of Inheritance and Variation
184710
If a man who is colour blind marries a woman who is pure normal for colour vision, the chances of their sons having colour blindness is:
1 \(100 \%\)
2 \(50: 50\)
3 \(0 \%\) (zero)
4 \(75: 25\)
Explanation:
: If a man who is colourblind marries a woman who is pure normal for colour wision, the chances of their sons having colour blindness is zero percent.
Rajasthan PMT-2006
Principle of Inheritance and Variation
184711
The main cause of Edyward syndrome Patau syndrome and Bown syndrome is :
1 mutation of gene
2 change in both autosomes and heterosomes
3 change in autosomes
4 change in heterosomes
Explanation:
: The main cause of Etward syndrome, Patau syndrome and Down syndrome is change in autosomes. - Edward syntrome 47(45 + XY/XX). It is trisomy of chromosome 18. - Patau syndrome \(47(45+\mathrm{XY} / \mathrm{XX})\) : trisony of chromosome 13. - Down syndrome \(47(45+\mathrm{XY} / \mathrm{XX})\) trisony of chromosome-21.
Manipal-2010/MGIMS Wardha-2003
Principle of Inheritance and Variation
184729
A bald headed ( Bb ) man marries a non-bald woman (Bb), their progeny if all are females, the probable bald to non-bald ratio in their progency would be:
1 \(1: 1\)
2 \(3: 1\)
3 \(1: 3\)
4 \(2: 1\)
Explanation:
: Baldness may occur due to radiation effects, thyroid irregularities and other reasons, but a particular type pattem baldness is hereditary. Hereditary baldness is carried by a dominant autosomal gene, say B. All homozygous BB are bald whether these are men or women. Similarly, homozygous (bb) men and women are always non-bald. In case of heterozygous baldness develops only in men and never in women, because the single dominant gene \(\mathbf{B}\) expresses itself only when push of male hormones is available. Pattern Baldness is example of sex influence trait cisorder
184698
Which genotype will indicate colour blindness in male?
1 \(\mathrm{X}^6 \mathrm{Y}\)
2 \(\mathrm{X}^{\text {C }}\)
3 \(\mathrm{X}^c \mathrm{Y}^c\)
4 \(\mathrm{X} \mathrm{Y}^{\circ}\)
Explanation:
: \(\mathrm{X}^{\text {c } Y}\) genotype will indicate coloublindness in males. The gene for red-green colourblindnes is located on X chromosome. Coloublindress is recessive to normal vision and is found more after in man. - \(\mathrm{X}^c \mathrm{X}^c\)-indicate colourblind female. - \(\mathrm{XX}^c\)-indicate carrier female.
Haryana PMT-2002
Principle of Inheritance and Variation
184710
If a man who is colour blind marries a woman who is pure normal for colour vision, the chances of their sons having colour blindness is:
1 \(100 \%\)
2 \(50: 50\)
3 \(0 \%\) (zero)
4 \(75: 25\)
Explanation:
: If a man who is colourblind marries a woman who is pure normal for colour wision, the chances of their sons having colour blindness is zero percent.
Rajasthan PMT-2006
Principle of Inheritance and Variation
184711
The main cause of Edyward syndrome Patau syndrome and Bown syndrome is :
1 mutation of gene
2 change in both autosomes and heterosomes
3 change in autosomes
4 change in heterosomes
Explanation:
: The main cause of Etward syndrome, Patau syndrome and Down syndrome is change in autosomes. - Edward syntrome 47(45 + XY/XX). It is trisomy of chromosome 18. - Patau syndrome \(47(45+\mathrm{XY} / \mathrm{XX})\) : trisony of chromosome 13. - Down syndrome \(47(45+\mathrm{XY} / \mathrm{XX})\) trisony of chromosome-21.
Manipal-2010/MGIMS Wardha-2003
Principle of Inheritance and Variation
184729
A bald headed ( Bb ) man marries a non-bald woman (Bb), their progeny if all are females, the probable bald to non-bald ratio in their progency would be:
1 \(1: 1\)
2 \(3: 1\)
3 \(1: 3\)
4 \(2: 1\)
Explanation:
: Baldness may occur due to radiation effects, thyroid irregularities and other reasons, but a particular type pattem baldness is hereditary. Hereditary baldness is carried by a dominant autosomal gene, say B. All homozygous BB are bald whether these are men or women. Similarly, homozygous (bb) men and women are always non-bald. In case of heterozygous baldness develops only in men and never in women, because the single dominant gene \(\mathbf{B}\) expresses itself only when push of male hormones is available. Pattern Baldness is example of sex influence trait cisorder
 son will be coloublind.</p>
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