In a test cross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant type offspring. This indicates:

1.	chromosomes failed to separate during meiosis
2.	the two genes are linked and present on the same chromosome
3.	both of the characters are controlled by more than one gene
4.	the two genes are located on two different chromosomes

Match the terms in Column I with their description in Column II and choose the correct option. 

A cell at the telophase stage is observed by a student in a 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 a cell plate and thus the cell is containing more chromosomes as compared to other dividing cells. This would result in:

1. polyploidy

2. somaclonal variation

3. polyteny

4. aneuploidy

Which of the following most appropriately describes haemophilia?
1. X-linked recessive gene disorder
2. Chromosomal disorder
3. Dominant gene disorder
4. Recessive gene disorder

The term "linkage" was coined by?

1. T.H. Morgan

2. T.Boveri

3. G.Mendel

4. W.Sutton

In the following human pedigree, the filled symbols represent the affected individuals. Identify the type of given pedigree: 
  

1. Autosomal dominant

2. X-linked recessive

3. Autosomal recessive

4. X-linked dominant

In his classic experiments on pea plants Mendel did not use?

1. Seed color

2. Pod length

3. Seed shape

4. Flower position

A pleiotropic gene:

How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?

Alleles are:
1. different phenotype
2. true breeding homozygotes
3. different molecular forms of a gene
4. heterozygotes