MCQs on Mendelian Disorders in Humans For NEET Exam 2022

NEET Biology is the scoring paper in the medical entrance examination. Here, you will discover the NEET Biology MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Biology Mendelian Disorders in Humans Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.


Q.1. Cystic fibrosis is an autosomal recessive genetic disorder. What are the chances that the child would have the disease if any one of the parent (either mother or father)is a carrier of the faulty cystic fibrosis gene (Cc)?

(a) 100 per cent
(b) 50 per cent
(c) 25 per cent
(d) 0 per cent

(d) 0 per cent


Q.2. Alpha 1 anti-trypsin deficiency is an autosomal recessive genetic disorder. What are the chances that any of the offspring do not express the disease phenotype if both parents are genotype (Aa)?

(a) 100 per cent
(b) 75 per cent
(c) 50 per cent
(d) 25 per cent

(b) 75 per cent


Q.3. Which of the following is a trait of X-linked recessive?

(a) Albinism
(b) Haemophilia
(c) Huntington’s disease
(d) None of these

(b) Haemophilia


Q.4. The mode of inheritance for the trait – Fragile X syndrome is________.

(a) X linked dominant
(b) X linked recessive
(c) Autosomal dominant
(d) Autosomal recessive

(a) X linked dominant


Q.5. If the father in a family has a disease while the mother is normal, the daughters only are inherited by this disease and not the sons. Name this type of disease?

(a) Autosomal recessive
(b) Autosomal dominant
(c) Sex-linked recessive
(d) Sex-linked dominant

(d) Sex-linked dominant


Q.6. Which of the following genotypes and phenotypes in a man may be the correct result of aneuploidy in sex chromosomes?

(a) 22 pairs + Y females
(b) 22 pairs + XY females
(c) 22 pairs + XXY females
(d) 22 pairs + XXXY females

(c) 22 pairs + XXY females


Q.7. What will be the condition of the progeny if the father is normal, while the mother has one gene for haemophilia and one gene for colour blindness on one of the X chromosomes?

(a) Only daughters are haemophilic and colour blind
(b) Both sons and daughters will be haemophilic and colour blind
(c) 50 per cent haemophilic and colour blind sons and 50% normal sons
(d) 50 per cent haemophilic colour blind daughters and 50% colour blind daughters

(c) 50 per cent haemophilic and colour blind sons and 50% normal sons


Q.8. Which of the following is a type of autosomal recessive genetic disorder?

(a) Haemophilia
(b) Skeletal dysplasia
(c) Sickle cell anaemia
(d) None of the above

(c) Sickle cell anaemia


Q.9. Which of the following disorder is also called the Royal disease?

(a) Colour blindness
(b) Haemophilia
(c) Sickle cell anaemia
(d) Alzheimer’s disease

(b) Haemophilia


Q.10. Which of the following disorder is an example of point mutation?

(a) Sickle cell anaemia
(b) Down’s syndrome
(c) Night blindness
(d) Thalassemia

(a) Sickle cell anaemia

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