| LIST I | LIST II | ||
| A | ABO blood group | I | Dihybird cross |
| B | Law of segregation | II | Monohybrid cross |
| C | Gene mutation | III | Base pairs substitution |
| D | Law of independent assortment | IV | Multiple allelism |
Rearrange the following parts to form a meaningful and grammatically correct sentence:
P. a healthy diet and regular exercise
Q. are important habits
R. that help maintain good physical and mental health
S. especially in today's busy world