Experimental verification of the chromosomal theory of inheritance was done by:

1. Sutton 2. Boveri
3. Morgan 4. Mendel

Subtopic:  Chromosomal Basis of Inheritance: Introduction |
 78%
From NCERT
NEET - 2020
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Select the correct match:

1. Phenylketonuria Autosomal dominant trait
2. Sickle cell anemia Autosomal recessive trait chromosome - 11
3. Thalassemia X linked
4. Haemophilia Y linked

Subtopic:  Mendelian Disorders: Sickle Cell Anemia |
 69%
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NEET - 2020
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Identify the wrong statement with reference to the gene 'I' that controls ABO blood groups.

1. A person will have only two of the 3 alleles.
2. When IA and IB are present together, they express same type of sugar.
3. Allele 'i' does not produce any sugar.
4. The gene (I) has three alleles. 

Subtopic:  Co-dominance |
 76%
From NCERT
NEET - 2020
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How many true-breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?

1.  2  2.  14 
3.  6 4.  4

Subtopic:  Introduction to Genetics: 1 |
 88%
From NCERT
NEET - 2020
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Chromosomal theory of inheritance was proposed by:

1. Sutton and Boveri

2. Bateson and Punnet

3. T. H. Morgan

4. Watson and Crick

Subtopic:  Chromosomal Basis of Inheritance: Introduction |
 82%
From NCERT
NEET - 2020
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The number of contrasting characters studied by Mendel for his experiments was:

1. 14 2. 4
3. 2 4. 7
Subtopic:  Introduction to Genetics: 1 |
 60%
From NCERT
NEET - 2020
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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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In which genetic condition, each cell in the affected person, has three sex chromosomes XXY?

1. Thalassemia

2. Klinefelter's Syndrome

3. Phenylketonuria

4. Turner's Syndrome

Subtopic:  Sex Aneuploidy - Turner & Klinefelter Syndrome |
 86%
From NCERT
NEET - 2019
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In a marriage between a male with blood group A and a female with blood group B, the progeny had either blood group AB or B. What could be the possible genotype of the parents?

1. IA i (Male) ; IB IB (Female)

2. IA IA (Male) ; IB IB (Female)

3. IA IA (Male) ; IB i (Female)

4. IA i (Male) ; IB i(Female)

Subtopic:  Dominance Deviation from Mendel: 2 |
 75%
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NEET - 2019
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Match the items of Column - I with Column - II :

Column-I

Column-II
(a) XX-XO method of sex determination (i) Turner's syndrome
(b) XX-XY method of sex Determination (ii) Female heterogametic
(c) Karyotype-45 (iii) Grasshopper
(d) ZW-ZZ method of Sex Determination (iv) Female homogametic


Select the correct option from the following:

(a) (b) (c) (d)
1. (ii) (iv) (i) (iii)
2. (i) (iv) (ii) (iii)
3. (iii) (iv) (i) (ii)
4. (iv) (ii) (i) (iii)
Subtopic:  Sex Determination | Sex Aneuploidy - Turner & Klinefelter Syndrome |
 79%
From NCERT
NEET - 2019
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