An individual with AaBb genotype is producing four types of gametes as AB, aB, Ab and ab by meiosis. If the frequency of these gametes is 25% each then, it explains

1.  Incomplete linkage

2.  Mutations

3.  Independent assortment 

4.  Complete linkage 

Which one of the following Mendelian trait controlling unit is expressed in homozygous condition only?

1.  Axial flower

2.  Yellow seed

3.  Yellow pod

4.  Smooth seed 

A pure tall - red flower plant was crossed with dwarf - white-flowered plant. In ${\mathrm{F}}_1$, all were tall with pink flowers. What is the percentage probability of getting red and pink-flowered plants respectively in F2 generation?

1.  25% and 50%

2.  50% and 25%

3.  Zero and 75%

4.  Zero and 50% 

Which one of the following traits are controlled by genes located on the differential part of X-chromosome?

1. Porcupine skin and epidermolysis bullosa

2. Beard in man and milk glands in female

3. Color blindness and hemophilia

4. Color blindness and cystic fibrosis

In pea, the gene that controls starch synthesis shows all of the following except

1.  Dominance 

2.  Incomplete dominance

3.  Multiple allelism

4.  Pleiotropy

What is incorrect for genetic maps?

Match the column correctly

1.  a(iii), b(i), c(iv), d(ii)
2.  a(ii), b(iii), c(i), d(iv)
3.  a(ii), b(i), c(iii), d(iv)
4.  a(iii), b(i), c(ii), d(iv)

All are X-linked traits, except

1. Colourblindness

2. Haemophilia

3. Deficiency of glucose-6-phosphate dehydrogenase

4. Hypertrichosis

If we change the position of genes on chromosomes it will be included in

1.  Gene mutation

2.  Chromosomal mutation

3.  Polyploidy

4.  Transversion mutation

If size of strach grains in pea is considered as phenotype, Bb alleles show

1.  Dominance

2.  Codominance

3.  Incomplete dominance

4.  Pleiotropism