With reference to domestication of crop plants, consider the following statements
1. Under the domestication, the variability generated by spontaneaus mutation, natural hybridization and polyploidy were selected by wan to suit his needs.
2. The extent of genetic variability substantially increased due to selection.
Which of the statements given above is/are correct?

Solution (By Examveda Team)

Concerning the domestication of crop plants, both statements are correct.
1. Under domestication, the variability generated by a spontaneous mutation, natural hybridization, and polyploidy were selected by wan to suit his needs.- A detailed phylogenetic study now shows that there is a compelling association between polyploidy and domestication and that polyploidy more frequently occurs before domestication. Polyploidy and domestication are both important phenomena in plant evolution.
2. The extent of genetic variability substantially increased due to selection.- Genetic variations that alter gene activity or protein function can introduce different traits in an organism. If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation.