Genetic Disorders

Q.

What are the three types of DNA replication?

Q.

The artificial method of treating the blood for removing the nitrogenous waste from it is known as:

1. Hemodialysis

2. Bypass surgery

3. Chemotherapy

4. Colonoscopy

Q.

What are the physical methods of prenatal diagnostics?

Q.

Can viruses cause genetic mutations?

Q.

The defective gene responsible for the disease phenylketonuria is found on chromosome __

Q.

What are chromosomal disorders?

Q.

What is the name of the phobia that involves an abnormal fear of spiders?

Q.

Is haemophilia a pleiotropy?

Q.

What is primary dysmenorrhea?

Q.

Is sickle cell anemia an autosomal recessive genetic disorder?

Q. Color blindness is reduced ability to distinguish between certain colors. This disease is caused due to_______

1. Bacteria
2. Virus
3. Defective gene
4. Fungus

Q.

In a haemophiliac patient, a small cut can cause excessive bleeding due to the absence of .

1. clotting factors
2. platelets
3. RBCs

Q.

Infantile amaurotic idiocy (Tay-Sachs disease) is

1. The result of severe protein deficiency in diet and damages the muscle development in growing children

2. An inherited disorder in which the spinal cord and brain are severely damaged within a few months of birth leading to paralysis and mental retardation, and finally the infant's death in 3 or 4 years

3. A genetic abnormality which appears at the age of 25-30 years and damages the bones

4. A chromosomal disorder in young children

Q.

What is female aneuploidy?

Q. Which of the following disorder is not hereditary?

1. Haemophilia
2. Cataract
3. Sickle-cell anaemia
4. Colour blindness

Q.

Is haemophilia hereditary?

Q. Which of the following disorders are caused due to recessive autosomal mutations?

1. Turner's syndrome and sickle cell anaemia
2. Cystic fibrosis and phenylketonuria
3. Alzheimer's disease and Huntington's chorea.
4. Edward's syndrome and Down's syndrome

Q. Epicanthus is the symptom of

1. Haploidy
2. Heteroploidy
3. Turner's syndrome
4. Down's syndrome

Q. The syndrome exhibiting trisomy in 21st chromosome is

1. Cri du chat synfrome
2. Turner's syndrome
3. Klinefelter's syndrome
4. Down syndrome

Q.

Color blindness is inability to distinguish between certain colors. This disease is caused due to a _______.

1. bacteria

2. virus

3. defective gene

4. fungus

Q. Tay-Sachs disease is

1. Both A and B
2. The result of severe protein deficiency in children and damages the muscle development growing children.
3. An inherited disorder in which the spinal cord and brain are severely damaged within a few months of birth leading to paralysis.
4. None of the above

Q. Among these, Tay-Sachs disease is due to

1. Hexosaminidase A protein deficiency in children leading to damaging affects on the muscle growth and development in children.
2. An inherited disorder in which the spinal cord and brain are severely damaged within a few months of birth leading to paralysis.
3. Both A and B.
4. None of the above.

Q. The gene disorder phenylketonuria is an example for

1. Polygenic inheritance.
2. Mutliple allelism.
3. Peliotrophy.
4. Multiple factor.

Q. Which of the following genetic disorder can cause mental retardation?

1. Hemophilia
2. Thalassemia
3. Down's syndrome
4. Huntington's disease

Q. Acne are caused by

1. H${}_1$N${}_1$ Virus
2. $Trypanosoma$
3. $Staphylococcus$
4. $Leishmania$

Q.

Color blindness is reduced ability to distinguish between certain colors. This disease is caused due to_______

1. Fungus

2. Bacteria

3. Virus

4. Defective gene

Q. What is aneuploidy? Name a chromosomal disorder in humans caused due to (a) gain of an autosome, and (b) loss of a sex chromosome in females. [2 marks]

Q. Differentiate between DNA duplication and replication

Q. A reptilian looks like house lizard is sitting on plant with it's tail coiled around twig in your garden. Can you identify the animal?

1. Chamaeleon showing protective colouration
2. Garden lizard (Calotes) showing camoutlage
3. Varanus showing mimicry
4. Hemidactylus showing sexual dimorphism