Which of the following statements is not true of two genes that show 50% recombination frequency?
1. The genes are tightly linked
2. The genes show independent assortment
3. If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosis
4.The genes may be on different chromosomes

The incorrect statement with regard to Haemophiliais :
1. It is a recessive disease
2. It is a dominant disease
3. A single protein involved in the clotting of blood is affected
4. It is a sex-linked disease

Fruit colour in squash is an example of :
1. Recessive epistasis
2. Dominant epistasis
3. Complementary genes
4. Inhibitory genes

Person with blood group AB is considered as universal recipient because he has:
1.both A and B antigens on RBC but no antibodies in the plasma.
2. both A and B antibodies in the plasma.
3. no antigen on RBC and no antibody in the plasma
4. both A and B antigens in the plasma but no antibodies

A man whose father was colour blind marries a woman who had a colourblind mother and a normal father. What percentage of male children of this couple will be colour blind?

A human female with Turner's syndrome:
1. has 45 chromosomes with XO
2. has one additional X chromosome.
3. exhibits male characters
4. is able to produce children with normal husband.

A man with blood group 'A' marries a woman with blood group 'B'. What are all the possible blood groups of their offsprings?
1. A., B and AB only
2. A,B, AB and O
3. O only
4. A and B only

The movement of a gene from one linkage group to another is called :
1. Duplication
2.Translocation
3. Crossing over
4. Inversion

The chromosomes in which centromere is situated close to one end are :
1. Acrocentric
2. Telocentric
3. Sub-metacentric
4. Metacentric

Multiple alleles are present :
1. At different loci on the same chromosome
2. At the same locus of chromosome
3. On non-sister chromatids
4. On different chromosomes