Which of the following statements is the most appropriate for sickle cell anaemia?
1. It cannot be treated with iron supplements
2. It is a molecular disease
3. It confers resistance to acquiring malaria
4. All of the above
Subtopic:  Mendelian Disorders: Sickle Cell Anemia |
 64%
Please attempt this question first.
Hints

All genes located on the same chromosome:
1. Form different groups depending upon their relative distance
2. Form one linkage group
3. Will not from any linkage groups
4. Form interactive groups that affect the phenotype
Subtopic:  Linkage |
 61%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Conditions of a karyotype 2n +1, 2n –1 and 2n + 2, 2n – 2 are called:
1. Aneuploidy
2. Polyploidy
3. Allopolyploidy
4. Monosomy
Subtopic:  Non - Disjunction & Aneuploidy |
 75%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

Distance between the genes and percentage of recombination shows:
1. a direct relationship
2. an inverse relationship
3. a parallel relationship
4. no relationship
Subtopic:  Recombination Gene Mapping |
 72%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

If a genetic disease is transferred from a phenotypically normal but carrier female to only some of the male progeny, the disease is:
1. Autosomal dominant
2. Autosomal recessive
3. Sex-linked dominant
4. Sex-linked recessive
Subtopic:  Sex Linked Recessive Inheritance |
 73%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

In sickle cell anaemia glutamic acid is replaced by valine. Which one of the following triplets codes for valine?
1. G G G
2. A A G
3. G A A
4. G U G
Subtopic:  Mendelian Disorders: Sickle Cell Anemia |
 92%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

Person having genotype IA IB would show the blood group as AB. This is because of:
1. Pleiotropy
2. Co-dominance
3. Segregation
4. Incomplete dominance
Subtopic:  Co-dominance |
 98%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

Z Z / ZW type of sex determination is seen in:
1. Platypus
2. Snails
3. Cockroach
4. Peacock
Subtopic:  Sex Determination |
 92%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

A cross between two tall plants resulted in offspring having few dwarf plants. What would be the genotypes of both the parents?
1. TT and Tt
2. Tt and Tt
3. TT and TT
4. Tt and tt
Subtopic:  Monohybrid Cross: 1 |
 79%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.

advertisementadvertisement

In a dihybrid cross, if you get 9:3:3:1 ratio it denotes that:
1. The alleles of two genes are interacting with each other
2. It is a multigenic inheritance
3. It is a case of multiple allelism
4. The alleles of two genes are segregating independently.
Subtopic:  Dihybrid Cross Analysis |
 87%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.