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| Column-$I$ | Column-$II$ |
|---|---|
| $(a)$ Pleiotropic gene | $(i)$ Both alleles express equally |
| $(b)$ Co-dominance | $(ii)$ Change in nucleotide |
| $(c)$ Epistasis | $(iii)$ One gene shows multiple phenotypic expression |
| $(d)$ Mutation | $(iv)$ Non-allelic gene interaction |
| List $I$ | List $II$ |
|---|---|
| $A$. Two or more alternative forms of a gene | $I$. Backcross |
| $B$. Cross of $F_1$ progeny with homozygous recessive parents | $II$. Ploidy |
| $C$. Cross of $F_1$ progeny with any of the parents | $III$. Allele |
| $D$. Number of chromosome sets in plant | $IV$. Test cross |
| Column-$I$ | Column-$II$ |
|---|---|
| $(A)$ 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 |
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