NEET Botany
Polygenic Inheritance Pleiotropy
Low Priority
Consistency: 35%
Weightage: 7 / 20 Yrs
High-Yield Trend
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2025 1
2023 1
2020 1
2015 1
2011 1
2007 1
2006 Questions 7 MCQs
01
PYQ 2006
easy
botany ID: neet-200
Which one of the following is an example of polygenic inheritance?
1. Flower colour in Mirabilis jalapa
2. Production of male honey bee
3. Pod shape in garden pea
4. Skin colour in humans
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02
PYQ 2007
easy
botany ID: neet-200
Inheritance of skin colour in humans is an example of:
| 1. | chromosomal aberration |
| 2. | point mutation |
| 3. | polygenic inheritance |
| 4. | codominance |
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03
PYQ 2011
easy
botany ID: neet-201
When two unrelated individuals or lines crossed, the performance of F1 hybrid is of superior to both its parents. This phenomenon is called:
1. transformation
2. splicing
3. metamorphosis
4. heterosis
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04
PYQ 2015
easy
botany ID: neet-201
A pleiotropic gene:
| 1. | Is expressed only in primitive plants |
| 2. | Is a gene that evolved during Pliocene |
| 3. | Controls a trait only in combination with another gene |
| 4. | Controls multiple traits in an individual |
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05
PYQ 2020
easy
botany ID: neet-202
The best example of pleiotropy is:
| 1. | Skin color | 2. | Phenylketonuria |
| 3. | Colour Blindness | 4. | ABO Blood group |
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06
PYQ 2023
easy
botany ID: neet-202
The phenomenon of pleiotropism refers to:
| 1. | more than two genes affecting a single character. |
| 2. | presence of several alleles of a single gene controlling a single crossover. |
| 3. | presence of two alleles, each of the two genes controlling a single trait. |
| 4. | a single gene affecting multiple phenotypic expressions. |
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07
PYQ 2025
medium
botany ID: neet-202
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 |
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