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NEET2003ZoologyPrinciples of Inheritance and VariationActual

Genes for cytoplasmic male sterility in plants are generally located in:

Options

  1. Achloroplast genome
  2. Bmitochondrial genome
  3. Cnuclear genome
  4. Dcytosol

Correct answer

B. mitochondrial genome

Step-by-step solution

The genes, located outside of nucleus (i.e., within the cytoplasm) also governs some traits, are referred to as plasmogenes or cytoplasmic genes. Cytoplasmic male sterility (i.e., dominance of female cytoplasmic genes over male) is due to plasmogenes located in mitochondrial DNA (mtDNA). Related Theory Cytoplasmic male sterility is total or partial male sterility in plants as the result of specific nuclear and mitochondrial interactions. Male sterile plants produce no functional pollen, but do produce viable eggs.

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