2022 · Q41
One way of incorporating desired characters into crop varieties is hybridization. In this process, there is crossing between genetically dissimilar plants. Which one of the following crossings will not refer to hybridization?
general-sciencebiology-plants
- AIntervarietal
- BInterspecific
- CIntergenic
- DIntragenic
Explanation
Hybridization in plant breeding is the crossing of genetically dissimilar plants, and recognised types include intervarietal (between varieties), interspecific (between species) and intergeneric (between genera) crosses. An intragenic cross — within a single gene — does not involve crossing genetically dissimilar plants and therefore does not constitute hybridization. Hence option D is the one that will not refer to hybridization.