| Column I | Column II | ||
| [a] | Isoalleles | 1. | Rare crossing over |
| [b] | Pseudoalleles | 2. | \[{{I}^{A1}}\,and\,\,{{I}^{A2}}\] |
| [c] | Inhibitor gene | 3. | Epistatic gene |
A) A-1, B-2, C-3
B) A-3, B-2, C-1
C) A-2, B-1, C-3
D) A-1, B-3, C-2
Correct Answer: D
Solution :
Iso alleles Alleles producing similar phenotypes but distinguishable amongst themselves through changed optima, e.g., \[\left| ^{A1}, \right|\left| ^{A2}, \right|\left| ^{A3} \right|\] Pseudo alleles Genes lying side by side, producing related phenotypic effect and distinguishable through a rare crossing over, e.g. star (dominant) and asteroid (recessive) triats in Drosophila. Suppressor or Inhibitor Gene A non-lethal gene, which inhibits the effect of a non-allelic dominant gene without producing its own effect (c.f. epistatic, gene).
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