Consider the given two statements:
Assertion (A):
Male honeybees do not have father and thus cannot have sons, but have a grandfather and can have grandsons.
Reason (R):
Male honeybees produce sperms by mitosis.
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 but (R) is False
4.
(A) is False but (R) is True
Subtopic: Â Sex Determination: Further Considerations |
 55%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
1. Both Assertion and Reason are true and Reason correctly explains Assertion
2. Both Assertion and Reason are true but Reason does not correctly explain Assertion
3. Assertion is true but Reason is false
4. Assertion is false but Reason is true
| Assertion: | A sex linked recessive disorders is expected to be more common in males than in females. |
| Reason: | Males are hemizygous for sex chromosomes. |
2. Both Assertion and Reason are true but Reason does not correctly explain Assertion
3. Assertion is true but Reason is false
4. Assertion is false but Reason is true
Subtopic: Â Sex Linked Recessive Inheritance |
 73%
Please attempt this question first.
Hints
What is not true regarding Phenylketonuria?
1. It is inborn error of metabolism.
2. It is inherited as the autosomal recessive trait.
3. The affected individual lacks an enzyme that converts the amino acid tyrosine into phenylalanine.
4. Accumulation of phenylpyruvic acid in brain results in mental retardation.
1. It is inborn error of metabolism.
2. It is inherited as the autosomal recessive trait.
3. The affected individual lacks an enzyme that converts the amino acid tyrosine into phenylalanine.
4. Accumulation of phenylpyruvic acid in brain results in mental retardation.
Subtopic: Â Mendelian Disorders |
 84%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Thalassemia is a qualitative problem of synthesising an incorrectly functioning globin. |
| Statement II: | Sickle cell anaemia is a quantitative problem of synthesising too few globin molecules while the latter. |
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Â Mendelian Disorders: Thalassemia |
 84%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Turner’s Syndrome:
I: is an aneuploidy
II: causes infertility in affected females
III: does not affect the development secondary sexual characters in affected females
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
I: is an aneuploidy
II: causes infertility in affected females
III: does not affect the development secondary sexual characters in affected females
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Â Sex Aneuploidy - Turner & Klinefelter Syndrome |
 83%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The cause of Klinefelter's syndrome in humans is :
1. Absence of Y-chromosome
2. Absence of X-chromosome
3. Extra copy of an autosome
4. Extra copy of an X-chromosome
1. Absence of Y-chromosome
2. Absence of X-chromosome
3. Extra copy of an autosome
4. Extra copy of an X-chromosome
Subtopic: Â Sex Aneuploidy - Turner & Klinefelter Syndrome |
 78%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Select the incorrect pair :
| 1. | Polygenic inheritance | Haemophilia |
| 2. | Linkage | Drosophila |
| 3. | Incomplete dominance | Antirrhinum |
| 4. | Pleiotropy | Phenylketonuria |
Subtopic: Â Polygenic Inheritance & Pleiotropy |Â Chromosomal Basis of Inheritance: Introduction |Â Linkage |Â Mendelian Disorders: Hemophilia |
 81%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
According to Mendel, the nature of the unit factors that control the expression of traits were :
1. Stable
2. Blending
3. Stable and discrete
4. Discrete
Subtopic: Â Chromosomal Basis of Inheritance: Introduction |Â Chromosomal Basis of Inheritance: Further Considerations |
 86%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following animals exhibit male heterogamety?
(i) Fruit fly
(ii) Fowl
(iii) Human
(iv) Honey bee
1. (i) and (iii)
2. (ii) and (iv)
3. (ii) and (iii)
4. (i) and (iv)
(i) Fruit fly
(ii) Fowl
(iii) Human
(iv) Honey bee
1. (i) and (iii)
2. (ii) and (iv)
3. (ii) and (iii)
4. (i) and (iv)
Subtopic: Â Sex Determination |
 79%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The probability of all possible genotypes of offsprings in a genetic cross can be obtained with the help of :
1. Test cross
2. Back cross
3. Punnett square
4. Linkage cross
1. Test cross
2. Back cross
3. Punnett square
4. Linkage cross
Subtopic: Â Monohybrid Cross: 1 |Â Monohybrid Cross: Further Understanding |
 65%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
© 2024 GoodEd Technologies Pvt. Ltd.