(a) polygenic Inheritance |
Multiple allelism |
Controlled by three or more genes |
More than two alleles govern the same character |
Example- A-B-C gene control skin colour |
Example- ABO blood grouping in humans |
(b) - It should be able to generate its replica / replication
- It should be chemically and structurally stable
- It should provide the scope for slow changes / mutation that are required for evolution
- It should be able to express itself in the form of a Mendelian characters.