Pedigree Analysis

Q.

An example of quantitative inheritance is

1. Colour of skin

2. Colour blindness

3. Klinefelters syndrome

4. Alkaptonuria

Q.

The person with Turners syndrome has

1. 45 autosomes and X sex chromosome

2. 44 autosomes and XXY sex chromosome

3. 45 autosomes and XYY sex chromosome

4. 44 autosomes and X sex chromosome

Q.

Pedigree Analysis is useful to

1. True

2. False

3. Study the inheritance of genes in humans

4. Find flow of chickenpox within the family

Q.

Study the pedigree chart given below.

It demonstrates:

1. Inheritance of a sex-linked disease.

2. Inheritance of an autosomal recessive condition.

3. The pedigree chart is wrong as this is not possible

4. Inheritance of a recessive sex-linked disease.

Q.

Is hemophilia inherited from the mother or father?

Q. In the case of color blindness, the only male child suffers from it not the female child. Why?

Q.

_________ is a diagrammatic representation of inheritance of a particular disease or trait among the individuals of many generations of a family.

1. Punnet square

2. Evolutionary tree

3. Family tree

4. Pedigree chart

Q.

If the father is unaffected by an X linked recessive disorder then his daughters will be free from X linked recessive disorder

1. False

2. True

Q. Blackening of urine occurs when exposed to air, is a metabolic disorder in human beings. This is due to

1. Phenylalanine
2. Glutamine replacing valine
3. Tyrosine
4. Homogentisic acid
5. Valine replacing glutamine

Q.

_________ is a tabular representation of inheritance of a particular disease or trait among the individuals of many generations of a family.

1. Evolutionary tree

2. Family tree

3. Pedigree chart

4. Punnet square

Q. Explain what would happen if:
(i) Excess fertilizers are added to soil.
(ii) Blood clots in the coronary artery.
(iii) Beta cells in the islets of langerhans are damanged.
(iv) Silicon emulsion is applied over the surface of leaves.
(v) Magnesium element is deficient in the soil

Q. Represented below is the inheritance pattern of a certain type of traits in humans, Which one of the following conditions could be an example of this pattern?

1. Haemophilia
2. Phenylketonuria
3. Sickle-cell anaemia
4. Thalassemia