Class 12 biology Principles of Inheritance and Variation Free test quiz

1. The crossing of F₁ to homozygous recessive parent is called

2. A disease caused by an autosomal primary non-disjunction is

3. 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

4. Extranuclear inheritance is a consequence of presence of genes in

5. RR (red) Antirrhinum is crossed with WW (white) one. Offspring RW are pink. This is an example of

6. When a certain character is inherited only through female parent, it probably represents

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

8. Which of the following is suitable for experiment on linkage?

9. The test cross is used to determine the

10. Extra chromosome ‘X’ is present in which one of the following cases?