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Q. No.Genes R and Y follow independent assortment. If RRYY produce round yellow seed and rryy produce wrinkled green seeds, what will be then phenotypic ratio of the F2 generation?
1. Phenotypic ratio - 9 : 3 : 3 : 1
2. Phenotypic ratio - 9 :7
3. Phenotypic ratio - 1 : 2 : 1
4. Phenotypic ratio - 3 : 1
Subtopic: Dihybrid Cross Analysis |
80%
From NCERT
NEET - 2025
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With the help of given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in \(F_3\) generation.
1. 1/8
2. Zero
3. 1/4
4. 1/2
1. 1/8
2. Zero
3. 1/4
4. 1/2
Subtopic: Pedigree Analysis: Problem Solving |
From NCERT
NEET - 2025
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What is the pattern of inheritance for polygenic traits?
| 1. | Autosomal dominant pattern |
| 2. | X-linked recessive inheritance pattern |
| 3. | Mendelian inheritance pattern |
| 4. | Non-Mendelian inheritance pattern |
Subtopic: Polygenic Inheritance & Pleiotropy |
From NCERT
NEET - 2025
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The mother has A+ blood group, the father has B+ and the child is A+. What can be possible genotypes of all three, respectively?
A. IAIA | IBi | IBi
B. IAIA | IBi | IAi
C. IB i IA IA| IA IB
D. IAIA | IBIB | IAi
E. IA | IBi | IAi
Choose the correct answer from the options given below:
1. C and D
2. D and A
3. A and B
4. B and E
A. IAIA | IBi | IBi
B. IAIA | IBi | IAi
C. IB i IA IA| IA IB
D. IAIA | IBIB | IAi
E. IA | IBi | IAi
Choose the correct answer from the options given below:
1. C and D
2. D and A
3. A and B
4. B and E
Subtopic: Co-dominance |
80%
From NCERT
NEET - 2024
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When a tall pea plant with round seeds was selfed, it produced the progeny of:
(a) tall plants with round seeds and
(b) tall plants with wrinkled seeds
Identify the genotype of the parent plant:
1. TtRr
2. TtRR
3. TTRR
4. TTRr
(a) tall plants with round seeds and
(b) tall plants with wrinkled seeds
Identify the genotype of the parent plant:
1. TtRr
2. TtRR
3. TTRR
4. TTRr
Subtopic: Dihybrid Cross: General Consideration |
69%
From NCERT
NEET - 2024
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Given below are two statements:
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is True but Statement II is False
2. Statement I is False but Statement II is True
3. Both Statement I and Statement II are True
4. Both Statement I and Statement II are False
| Statement I: | Failure of segregation of chromatids during cell cycle, resulting in the gain or loss of whole set of chromosome in an organism, is known as aneuploidy. |
| Statement II: | Failure of cytokinesis after anaphase stage of cell division resulting in the gain or loss of chromosome is called polyploidy. |
1. Statement I is True but Statement II is False
2. Statement I is False but Statement II is True
3. Both Statement I and Statement II are True
4. Both Statement I and Statement II are False
Subtopic: Chromosomal Disorders |
From NCERT
NEET - 2024
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| List-I Types of inheritance |
List-II Example |
||
| A. | Incomplete dominance | I. | Blood groups in human |
| B. | Co-dominance | II. | Flower colour in Antirrhinum |
| C. | Pleiotropy | III. | Skin colour in human |
| D. | Polygenic inheritance | IV. | Phenylketonuria |
1. A-III,B-IV, C-II, D-I
2. A-II, B-I, C-IV, D-III
3. A-II,B-III, C-I, D-IV
4. A-IV, B-I, C-III, D-II
Subtopic: Monohybrid Cross: 1 | Monohybrid Cross: Further Understanding | Polygenic Inheritance & Pleiotropy | Co-dominance |
89%
From NCERT
NEET - 2024
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Given below are two statements:
In the light of the above statements, choose the correct answer from the options given below.
1. Statement I is True but Statement II is False
2. Statement I is False but Statement II is True
3. Both Statement I and Statement II are True
4. Both Statement I and Statement II are False
| Statement I: | When many alleles of single gene govern a character, it is called polygenic inheritance. |
| Statement II: | In polygenic inheritance, the effect of each allele is additive |
1. Statement I is True but Statement II is False
2. Statement I is False but Statement II is True
3. Both Statement I and Statement II are True
4. Both Statement I and Statement II are False
Subtopic: Polygenic Inheritance & Pleiotropy |
From NCERT
NEET - 2024
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In animal kingdom, along with XX-YY mechanism, many other variants of chromosomal sex determination mechanisms have been described such as XX-XO mechanism, ZZ-ZW mechanism ZZ-ZO mechanism and haplo-diploidy mechanism, which are present respectively in:
1. Birds, Grasshopper, Wasp, Moth
2. Grasshopper, Birds, Moth, Wasp
3. Birds, Moth, Grasshopper, Wasp
4. Grasshopper, Moth, Birds, Wasp
1. Birds, Grasshopper, Wasp, Moth
2. Grasshopper, Birds, Moth, Wasp
3. Birds, Moth, Grasshopper, Wasp
4. Grasshopper, Moth, Birds, Wasp
Subtopic: Sex Determination |
82%
From NCERT
NEET - 2024
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The phenomenon where a single gene exhibits multiple phenotypic expressions is called:
1. Co-dominance
2. Pleiotropy
3. Multiple alleles
4. Polygenic inheritance
1. Co-dominance
2. Pleiotropy
3. Multiple alleles
4. Polygenic inheritance
Subtopic: Polygenic Inheritance & Pleiotropy |
83%
From NCERT
NEET - 2024
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