Class 12 biology Principles of Inheritance and Variation Free test quiz

1. A polygenic inheritance in human beings is

2. A woman with albinic father marries an albinic man. The proportion of her progeny is

3. Two non-allelic genes produce the new phenotype when present together but fail to do so independently, it is called

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

5. If a genetic disease is transferred from a phenotypically normal but carrier female to only some of the male progeny, the disease is

6. Which one of the following traits of garden pea studied by Mendel was a recessive feature?

7. In a dihybrid cross, F₂ phenotypic ratio is 13 : 3. It is case of

8. The contrasting pairs of factors in Mendelian crosses are called

9. During organ differentiation in Drosophila, an organ is modified to another organ (such as wings may be replaced by legs) Genes responsible for such metamorphosis are called

10. A man with blood group 'A' marries a woman with blood group 'B'. What are all the possible blood groups of their offsprings?