A female whose father was colorblind marries and normal male whose father was also colorblind. What is the probablility that their daughter will be colorblind?

1. 0 %

2. 25 %

3. 50 %

4. 75 %

Subtopic:  Sex Linked Recessive Inheritance |
 59%
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NEET 2023 - Target Batch - Aryan Raj Singh
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In humans, the dominance relationship between the A and B alleles of ABO blood group gene is an example of

(1) complete dominance.

(2) incomplete dominance.

(3) codominance.

(3) epistasis

 

Subtopic:  Dominance Deviation from Mendel: 2 |
 85%
From NCERT
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One of the Mendel's pure strains of pea plants had green peas. How many different types of eggs could such a plant produce with regard to pea color?

1. 1

2. 2

3. 4

4. 8

Subtopic:  Monohybrid Cross: 1 |
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NEET 2023 - Target Batch - Aryan Raj Singh
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A woman receives her X chromosomes from:

1. Her mother only

2. Her father only

3. Both her mother and father 

4. Mitochondria of mother only

 

Subtopic:  Sex Determination |
 83%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following would not be a feature seen in a patient with the following karyotype ?

1. Many loops on finger tips

2. Congenital heart disease

3. Big and wrinkled tongue

4. Mucus clogging of airways

Subtopic:  Non - Disjunction & Aneuploidy |
 61%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Given below is the initial amino acids of the beta chain of a hemoglobin molecule. What will be true about this hemoglobin molecule ?

1. The RBCs carrying this molecule will undergo sickling at high oxygen tension
2. The RBCs carrying this molecules will undergo sickling at low oxygen tension
3. There will be a quantitative decrease in the synthesis of this molecule
4. This is normal beta chain of the hemoglobin molecule
Subtopic:  Mendelian Disorders: Sickle Cell Anemia |
 53%
From NCERT
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The disease inheritance pattern exemplified in the given pedigree analysis can be:
 

1. Hemophilia 2. Red-green colour blindness
3. Phenyl ketonuria 4. Polydactyly
Subtopic:  Pedigree Analysis: More Examples |
 71%
From NCERT
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Consider the following statements:

I. People affected by phenylketonuria are unable to convert tyrosine to phenylalanine.

II. Alzheimer's disease results from accumulation of amyloid protein plaques in the brain.

III. Klinefelter's and Turner's syndromes are the result of non disjunction of the sex chromosomes in either of sexes.

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I, II and III

Subtopic:  Sex Aneuploidy - Turner & Klinefelter Syndrome |
 57%
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Consider the following statements:

I. If we put them through test cross, all homozygous dominant combinations will breed true but heterozygous genotypes will follow the segregation.

II. Two gene interactions such as epistasis do not follow the Menedelian principle of segregation.

III. In any diploid individual, only two alleles can be found, so multiple alleles can be detected only in a population.

Which of the above statements are true?

1. I and II only

2. I and III only

3. II and III only

4. I, II and III

Subtopic:  Dominance Deviation from Mendel: 2 |
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A gene showing codominance has

(1) one allele dominant on the other

(2) alleles tightly linked on the same chromosome

(3) alleles that are recessive to each other

(4) both alleles independently expressed in the heterozygote

Subtopic:  Dominance Deviation from Mendel: 2 |
 84%
From NCERT
NEET - 2015
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