- 1(current)
Q. No.A trait displays continuous phenotypic variation and is spread across a gradient. Usually, the inheritance of this trait can be described as:
1. dominant-recessive inheritance
2. multiple-allele inheritance
3. polygenic inheritance
4. sex-linked inheritance
Subtopic: Â Polygenic Inheritance & Pleiotropy |
 60%
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A male with genotype AABBCC and a very dark complexion mates with a female with genotype aabbcc and a very fair complexion. What is the probability of their progeny being born with an intermediate skin colour type?
| 1. | 6/64 | 2. | 15/64 |
| 3. | 20/64 | 4. | 1/64 |
Subtopic: Â Polygenic Inheritance & Pleiotropy |
 53%
From NCERT
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The physiological basis of pleiotropy is:
| 1. | lack of independent assortment in linked genes |
| 2. | separation of homologous chromosomes at anaphase I in meiosis I |
| 3. | dominance is not an autonomous feature of an allele |
| 4. | inter-relationships of many metabolic pathways in the living organisms |
Subtopic: Â Polygenic Inheritance & Pleiotropy |
 67%
From NCERT
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- 1(current)
Q. No.
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