Among the following characters, which one was not considered by Mendel in his experiments on pea?

1. Trichomes-Gladular or non-gladular

2. Seed-green or yellow

3. Pod-inflated or constricted

4. Stem-Tall or Dwarf

Subtopic:  Introduction to Genetics: 2 |
 93%
From NCERT
NEET - 2017
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Which of the following characteristics represent the 'Inheritance of blood groups' in humans? 

a. Dominance

b. Co-dominance

c. Multiple allelism

d. Incomplete dominance

e. Polygenic inheritance

1.  b, c, and e 2.  a, b and c
3.  b, d, and e 4.  a, c, and e
Subtopic:  Co-dominance |
 59%
From NCERT
NEET - 2018
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A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by:

1.Only daughters2.Only sons
3.Only grandchildren4.Both sons and daughters

Subtopic:  Sex Linked Inheritance: Introduction |
 68%
From NCERT
NEET - 2018
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If a colourblind man marries a woman who is homozygous for normal colour vision, the probability of their son being colourblind is:

1. 0

2. 0.5

3. 0. 75

4. 1

Subtopic:  Mendelian Disorders |
 81%
NEET - 2016
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Which one from those given below is the period for Mendel's hybridization experiments?

1. 1840-1850 2. 1857-1869
3. 1870-1877 4. 1856-1863

Subtopic:  Introduction to Genetics: 1 |
 87%
From NCERT
NEET - 2017
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A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F1 plants were selfed, the resulting genotypes were in the ratio of:
1. 1:2:1 :: Tall heterozygous : Tall homozygous : Drawf
2. 3:1 :: Tall : Dwarf
3. 3:1:: Dwarf : Tall
4. 1:2:1:: Tall homozygous : Tall heterozygous : Dwarf
Subtopic:  Monohybrid Cross: 1 |
 76%
From NCERT
NEET - 2016
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Pick out the correct statements:
I:  Haemophilia is a sex-linked recessive disease. 
II:  Down’s syndrome is due to aneuploidy. 
III:  Phenylketonuria is an autosomal recessive gene disorder. 
IV:  Sickle cell anaemia is an X-linked recessive gene disorder
1. II and IV are correct
2. I, III and IV are correct
3. I, II and III are correct
4. I and IV are correct
Subtopic:  Mendelian Disorders: Sickle Cell Anemia | Mendelian Disorders | Mendelian Disorders: Hemophilia | Non - Disjunction & Aneuploidy |
 79%
From NCERT
NEET - 2016
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In a test cross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant type offspring. This indicates:
1. chromosomes failed to separate during meiosis
2. the two genes are linked and present on the same chromosome
3. both of the characters are controlled by more than one gene
4. the two genes are located on two different chromosomes
Subtopic:  Linkage | Recombination Gene Mapping |
 82%
From NCERT
NEET - 2016
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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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Which of the following most appropriately describes haemophilia?
1. X-linked recessive gene disorder
2. Chromosomal disorder
3. Dominant gene disorder
4. Recessive gene disorder

Subtopic:  Mendelian Disorders: Hemophilia |
 91%
From NCERT
NEET - 2016
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