Biology Genetics Test Online MCQs

1. Primary source of allelic variation is

2. Restriction endonucleases are used as

3. Polygenic genes show

4. Given below is a representation of a kind of chromosomal mutation. What is the kind of mutation represented? 

5. Grain colour in wheat is determined by three pairs of polygene. Following the cross AABBCC (dark colour) x aabbcc(light colour), in F₂ generation what proportion of the progeny is likely to resemble either parent?

6. Transposon was discovered by

7. Frame shift mutation occurs when

8. Given below is a pedigree chart of a family with five children. It shows the inheritance of attached earlobes as opposed to the free ones. The squares represent the male individuals and circles the female individuals. Which one of the following conclusions drawn is correct?

9. XO chromosomal abnormality in humans causes

10. Colchicine prevents the mitosis of cells at which of the following stage?

11. Which one of the following pairs of terms/names mean one and the same thing?

12. If a homozygous tall plant is crossed with homozygous dwarf plant, the off springs will be

13. Which RNAs pick up specific amino acid from amino acid pool in the cytoplasm to ribosome during protein synthesis?

14. The Structure of DNA is

15. Wobble hypothesis was given by