A trait displays continuous phenotypic variation and is spread across a gradient. Usually, the inheritance of this trait can be described as:
1. dominant-recessive inheritance
2. multiple-allele inheritance
3. polygenic inheritance
4. sex-linked inheritance
1. | 6/64 | 2. | 15/64 |
3. | 20/64 | 4. | 1/64 |
The physiological basis of pleiotropy is:
1. | lack of independent assortment in linked genes |
2. | separation of homologous chromosomes at anaphase I in meiosis I |
3. | dominance is not an autonomous feature of an allele |
4. | inter-relationships of many metabolic pathways in the living organisms |