An abnormal human of the karyotype 49, XXXYY will form how many Barr bodies?

1. 1
2. 2
3. 3
4. 4

Match the items of Column-I with Column-II:

Select the correct option from the following:

In a marriage between a male with blood group A and a female with blood group B, the progeny had either blood group AB or B. What could be the possible genotype of the parents?

1. I^A i (Male) ; I^B I^B (Female)

2. I^A I^A (Male) ; I^B I^B (Female)

3. I^A I^A (Male) ; I^B i (Female)

4. I^A i (Male) ; I^B i(Female)

In which genetic condition, each cell in the affected person, has three sex chromosomes XXY?

1. Thalassemia

2. Klinefelter's Syndrome

3. Phenylketonuria

4. Turner's Syndrome

“Chromosomes, which are seen in all dividing cells and pass from one generation to the next, are the basis for all genetic inheritance”.
This statement is credited to:

A disease caused by an autosomal primary non-disjunction is:
1. Down's Syndrome
2. Klinefelter's Syndrome
3. Turner's Syndrome
4. Sickle Cell Anemia

Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement :

The genotypes of a Husband and Wife are IAIB and IAi .
Among the blood types of their children how many different genotypes and phenotypes are possible
1. 3 genotypes ; 3 phenotypes
2. 3 genotypes; 4 phenotypes
3. 4 genotypes ; 3 Phenotypes
4. 4 genotypes ; 4 phenotypes

The mechanism that causes a gene to move from one linkage group to another is called
1. Crossing-over
2. inversion
3. duplication
4. translocation

A cell at the telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at the telophase stage. There is no formation of the cell plate and thus the cell is containing more chromosomes as compared to other dividing cells. This would result in:
1. Polyteny
2. Aneuploidy
3. Polyploidy
4. Somaclonal variation