NEET Botany
Recombination Gene Mapping
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Consistency: 15%
Weightage: 3 / 20 Yrs
High-Yield Trend
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2022 1
2019 1
2013 Questions 3 MCQs
01
PYQ 2013
medium
botany ID: neet-201
Which of the following statements is not true of two genes that show 50% recombination frequency?
| 1. | The genes are tightly linked. |
| 2. | The genes show independent assortment. |
| 3. | If the genes are present on the same chromosome, they undergo more than one crossing-over in every meiosis. |
| 4. | The genes may be on different chromosomes. |
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02
PYQ 2019
medium
botany ID: neet-201
What map unit (Centimorgan) is adopted in the construction of genetic maps?
| 1. | A unit of distance between genes on chromosomes, representing 50% cross-over. |
| 2. | A unit of distance between two expressed genes, representing 10% cross-over. |
| 3. | A unit of distance between two expressed genes, representing 100% cross-over. |
| 4. | A unit of distance between genes on chromosomes. representing 1% cross-over. |
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03
PYQ 2022
easy
botany ID: neet-202
The recombination frequency between the genes a & c is 5%, b & c is 15%, b & d is 9%, a & b is 20%, c & d is 24% and a & d is 29%. What will be the sequence of these genes on a linear chromosome?
| 1. | a, c, b, d | 2. | a, d, b, c |
| 3. | d, b, a, c | 4. | a, b, c, d |
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