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Q. No. Z Z / ZW, female heterogamety, type of sex determination is seen in:
1. Platypus
2. Snails
3. Cockroach
4. Fowl
Subtopic: Sex Determination |
87%
From NCERT
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What is the number of phenotypes and genotypes in the F2 generation of a Mendelian dihybrid cross?
1. phenotypes - 4; genotypes - 16
2. phenotypes - 9; genotypes - 4
3. phenotypes - 4; genotypes - 8
4. phenotypes - 4; genotypes - 9
1. phenotypes - 4; genotypes - 16
2. phenotypes - 9; genotypes - 4
3. phenotypes - 4; genotypes - 8
4. phenotypes - 4; genotypes - 9
Subtopic: Dihybrid Cross: Details |
57%
From NCERT
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What would be the genotype of a mother with blood group ‘A’ and a father with blood group ‘B’ if their progeny has an ‘O’ blood group?
| 1. | Mother is homozygous for ‘A’ blood group and father is heterozygous for ‘B’ |
| 2. | Mother is heterozygous for ‘A’ blood group and father is homozygous for ‘B’ |
| 3. | Both the mother and father are heterozygous for ‘A’ and ‘B’ blood group, respectively |
| 4. | Both the mother and father are homozygous for ‘A’ and ‘B’ blood group, respectively |
Subtopic: Monohybrid Cross: 1 | Monohybrid Cross: Further Understanding |
92%
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How many of the given genetic disorders are inherited as a recessive condition?
I: Sickle cell anaemia
II: Colour blindness
III: Phenylketonuria
IV: Haemophilia
1. 1
2. 2
3. 3
4. 4
I: Sickle cell anaemia
II: Colour blindness
III: Phenylketonuria
IV: Haemophilia
1. 1
2. 2
3. 3
4. 4
Subtopic: Sex Linked Recessive Inheritance |
78%
From NCERT
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A changed chromosome number such as 2n +1, 2n –1 and 2n + 2, 2n – 2 is called:
1. Aneuploidy
2. Polyploidy
3. Allopolyploidy
4. Monosomy
1. Aneuploidy
2. Polyploidy
3. Allopolyploidy
4. Monosomy
Subtopic: Non - Disjunction & Aneuploidy |
85%
From NCERT
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Consider the given two statements:
| Assertion (A): | Both α- and β-thalassemias are often inherited in an autosomal recessive manner. |
| Reason (R): | The thalassemias are classified according to which chain of the hemoglobin molecule is affected. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | (A) is True, (R) is False |
| 4. | (A) is False, (R) is True |
Subtopic: Mendelian Disorders: Thalassemia |
72%
From NCERT
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The sickle cell trait provides a survival advantage against:
1. Malaria
2. HIV
3. Covid 19
4. Swine flu
1. Malaria
2. HIV
3. Covid 19
4. Swine flu
Subtopic: Mendelian Disorders |
90%
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Male honeybees produce gametes by:
| 1. | Mitosis |
| 2. | Meiosis |
| 3. | Abnormal mitosis |
| 4. | Male honeybees are sterile; they do not produce gametes |
Subtopic: Sex Determination |
76%
From NCERT
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In fowl, the sex of offspring is determined by:
1. Male parent
2. Female parent
3. Both male and female parents
4. Environmental conditions
1. Male parent
2. Female parent
3. Both male and female parents
4. Environmental conditions
Subtopic: Sex Determination |
81%
From NCERT
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In Pisum sativum, which of the following is not a dominant trait?
1. Violet flower color
2. Yellow pod color
3. Axial flower position
4. Tall stem height
Subtopic: Introduction to Genetics: 1 |
88%
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