Read the following four statements (A – D)

1.     The characters blend in the heterozygous condition during Mendelian inheritance.

2.      Change in a single base pair of DNA does not cause mutation.

3.       Cancer cells can show chromosomal aberrations.

4.        In insect, sex chromosomes in the male are ZZ and in females are ZW.

• A

  4

• B

  3

• C

  2

• D

  1