Match the terms in Column I with their description in Column II and choose the correct option.
| a) | Dominance | i) | Many genes govern a single character |
| b) | Codominance | ii) | In a heterozygous organism only one allele expresses itself |
| c) | Pleiotropy | iii) | In a heterozygous organism both alleles express themselves fully |
| d) | Polygenic inheritance | iv) | A single gene influences many characters |
| a | b | c | d | |
| 1. | ii | i | iv | iii |
| 2. | ii | iii | iv | i |
| 3. | iv | i | ii | iii |
| 4. | iv | iii | i | ii |
| Dominance | In a heterozygous organism only one allele expresses itself |
| Codominance | In a heterozygous organism both alleles express themselves fully |
| Pleiotropy | A single gene influences many characters |
| Polygenic inheritance | Many genes govern a single character |
