17
With respect to self-incompatibility (Sl) in Brassica oleracea, which of the following statement is INCORRECT?
EXPLANATION
Male Sterility Systems, Self-Incompatibility
- Molecular Genetics of Sporophytic Self-Incompatibility (SSI) in Brassica oleracea:
- The S-locus behaves as an integrated, non-recombining genetic complex termed an S-haplotype.
- It consists of closely linked polymorphic genes: SRK (S-receptor kinase, the female determinant on the stigma) and SP11/SCR (S-locus protein 11, the male determinant in the pollen coat), along with SLG.
- Because recombination would disrupt the allele-specific matching between pollen ligand and stigma receptor, recombination between SRK and SP11/SCR is strictly suppressed. Therefore, asserting that recombination occurs between them is incorrect.
- Correct Option: Option 2 (Recombination occurs between SRK, SP11/SCR and SLG genes of S-haplotype).
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