Match the terms in Column I with their description in Column II and choose the correct option. 

Column I Column II
A. Dominance 1. Many govern a single character
B. Codominance 2. In a heterozygous organism, only one allele expresses itself
C. Pleiotropy 3. In a heterozygous organism, both alleles express themselves fully
D. Polygenic inheritance 4. A single gene influences many characters
 
A B C D
1. 2 3 4 1
2. 4 1 2 3
3. 4 3 1 2
4. 2 1 4 3
Subtopic:  Polygenic Inheritance & Pleiotropy | Co-dominance |
 91%
From NCERT
NEET - 2016
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A pleiotropic gene

1.   is expressed only in primitive plants

2.   is a gene involved during Pliocene

3.  controls a trait only in combination with another gene

4.   control multiple traits in an individual

Subtopic:  Polygenic Inheritance & Pleiotropy |
 88%
From NCERT
NEET - 2015
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Which one of the following pairs of features is a good example of polygenic inheritance?

(1) Human height and skin colour

(2) ABO blood group in humans and flower colour of Mirabilis jalapa

(3) Hair pigment of mouse and tongue rolling in humans

(4) Human eye colour and sickle cell anaemia

Subtopic:  Polygenic Inheritance & Pleiotropy |
 87%
From NCERT
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Match column-I with column-II.

 

        Column-I

 

               Column-II

(a)

Multiple alleles

(i)

Phenylketonuria in humans

(b)

Polygenes

(ii)

Blood groups in humans

(c)

Pleiotropy

(iii)

Skin color in human

1. a-ii, b-i, c-iii

2. a-ii, b-iii, c-i

3. a-iii, b-ii, c-i

4. a-i, b-iii, c-ii

Subtopic:  Dominance Deviation from Mendel: 1 | Polygenic Inheritance & Pleiotropy |
 81%
From NCERT
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Ability of a gene to have multiple phenotypic effects is known as

1.  Co-dominance 

2.  Pleiotropy

3.  Multiple allelism

4.  Incomplete dominance 

Subtopic:  Polygenic Inheritance & Pleiotropy |
 82%
From NCERT
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The best example of pleiotropy is:

1. Skin color 2. Phenylketonuria
3. Colour Blindness 4. ABO Blood group
Subtopic:  Polygenic Inheritance & Pleiotropy |
 69%
From NCERT
NEET - 2020
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How many of the following statements is/are correct for a polygenic inheritance?

(1) They show uniformity.

(2) Controlled by three or more genes

(3) It is not influenced by the environment.

(4) In polygenic inheritance phenotype reflects the contribution of dominant allele only.

Options :

1. 1 and 2

2. 2, 3 and 4

3. 1, 3 and 4

4. only 2

Subtopic:  Polygenic Inheritance & Pleiotropy |
 57%
From NCERT
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In pea, the gene that controls starch synthesis shows all of the following except

1.  Dominance 

2.  Incomplete dominance

3.  Multiple allelism

4.  Pleiotropy

  

Subtopic:  Dominance Deviation from Mendel: 2 | Polygenic Inheritance & Pleiotropy |
From NCERT
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