Albinism

Q. The disorder in which the body cannot produce melanin is a type of:

1. Polygenic disorder
2. Chromosomal abnormality
3. Monogenic disorder
4. (a) and (b) above.

Q.

Albinism is genetically inherited.

1. True

2. False

Q. Assertion [A]: Albinism is a genetic disorder.
Reason [R]: Albinism arises due to change in chromosomal number.

1. [R] is true and [A] is false
2. [A] is true and [R] is false
3. Both [A] and [R] are true and [R] is the correct explanation for [A]
4. Both [A] and [R] are true but [R] is not the correct explanation for [A]

Q. Choose the correct option.
Assertion [A] : Insulin can be produced in bacterial cells.
Reason [R] : Genetic engineering techniques can be used to transfer genes across species.

1. Both [A] and [R] are true and [R] is a correct explanation to [A]
2. Both [A] and [R] are true but [R] is not a correct explanation to [A]
3. [A] is true and [R] is false
4. [A] is false and [R] is true

Q.

Down Syndrome is caused by trisomy of chromosome 21. True or false?

1. True

2. False

Q. Which among the following is not a symptom of Albinism?

1. Pink eyes
2. Sterility
3. White hair
4. Pale skin

Q. Identify the correctly matched pair from the following?

1. Down's syndrome - Mutation in a single gene
2. Klinefelter syndrome - Absence of one X-chromosome
3. Sickle-cell anaemia - Presence of an additional X chromosome
4. Albinism - Mutation in a single gene

Q. In case of albino people, there is an absence of pigment. So, what will be the gene controlling their skin colour ?

Q. If father had a mutation in his mitochondria and mother was normal. Then in the next generation this mutation will be seen in:

1. All the offsprings
2. 50% of the offsprings
3. One-third of the offsprings
4. None of the offsprings

Q.

People who have no melanin pigment and have white skin are called:

1. Mangoloids

2. Albinos

3. Sumerians

4. Pigmis

Q. Genetic diseases are

1. Diseases that cannot be communicated from a sick person to a healthy person.
2. Diseases that can be communicated from a sick person to a healthy person.
3. Diseases that are transmitted from one generation to the next generation in a family.
4. Diseases that are caused by malfunctioning of body organs.

Q. Choose the correct answers from the alternatives given.
The continued occurrence of sickle-cell disease in parts of Africa with malaria is due to

1. Disruptive selection
2. Continual mutation
3. Fitness of the heterozygote
4. Gene flow between populations

Q.

When an individual gets an extra chromosome from a parent the resulting condition is called ________.

1. Disjunction

2. Nondisjunction

3. Aneuploidy

4. Polyploidy

Q. Lack of melanin synthesis may cause the genetic disorder, which is known as

1. Colour blindness
2. Haemophila
3. Albinism
4. Hypertrichosis

Q. Statement 1: Colouration of skin is due to a pigment melanin.
Statement 2: Dwarfism is the complete loss of pigmentation.

1. Statement 1 is false and statement 2 is true.
2. Both the statements are false.
3. Both the statements are true.
4. Statement 1 is true and statement 2 is false.

Q. Seminal fluid has a PH_--------- of about-----

1. $6.0$
2. $7.4$
3. $8.5$
4. $9.0$

Q. Choose the correct pair.

1. Sickle-cell
2. RBC
3. Klinefelter
4. Sterile male
   
5. Turner syndrome
6. Sterile female
7. Down syndrome
8. Trisomy 21
9. Albinism
10. No pigmentation
11. Diabetes
12. Polygenic

Q.

Statement 1: Colouration of skin is due to a pigment melanin.

Statement 2: Dwarfism is the complete loss of pigmentation.

1. Both the statements are true.

2. Both the statements are false.

3. Statement 1 is true and statement 2 is false.

4. Statement 1 is false and statement 2 is true.

Q. Assertion [A]: Albinism is a genetic disorder.
Reason [R]: Albinism arises due to change in chromosomal number.

1. [A] is true and [R] is false
2. [R] is true and [A] is false
3. Both [A] and [R] are true and [R] is the correct explanation for [A]
4. Both [A] and [R] are true but [R] is not the correct explanation for [A]

Q. The disorder in which the body cannot produce melanin is a type of:

1. Polygenic disorder
2. Chromosomal abnormality
3. Monogenic disorder
4. (a) and (b) above.

Q. Identify the correctly matched pair from the following?

1. Down's syndrome - Mutation in a single gene
2. Klinefelter syndrome - Absence of one X-chromosome
3. Sickle-cell anaemia - Presence of an additional X chromosome
4. Albinism - Mutation in a single gene

Q.

People who have no melanin pigment and have white skin are called:

1. Albinos

2. Mangoloids

3. Sumerians

4. Pigmis

Q.

Which among the following are genetic disorders?

A) Albinism
B) Ebola
C) Tuberculosis
D) Sickle-cell anaemia
E) Dengue fever

1. A, D and E
2. A and D
3. A, B and D
4. A, C and E

Q. Which among the following is not a symptom of Albinism?

1. Pink eyes
2. White hair
3. Pale skin
4. Sterility