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Mustard was growing in two fields- A and B. While Field A produced brown coloured seeds, field B produced yellow coloured seeds.
It was observed that in field A, the offsprings showed only the parental trait for consecutive generations, whereas in field B, majority of the offsprings showed a variation in the progeny.
What are the probable reasons for these?
Answer
Pollination is a method of sexual reproduction in plants where pollen grains from the anther of one plants are transferred to the stigma of another.
- Self Pollination occurs in plants with the same or genetically similar flower . It results in consecutive generations with the parental trait .
- Cross Pollination occurs in plants with the of one flower with another flower . It results in new generations with variations in their traits
Hence, variation in parental trait is possible in case of Cross Pollination and not Self Pollination
- In field A , since offspring showed same parental trait, it is Self Pollination
- In field B , since offspring showed different parental trait , it may be case of Cross-Pollination
