First slide
Sexual Reproduction
Question

If the stock contains 48 chromosomes and the scion contains 30 chromosomes, then how many chromosomes are present in the root and egg cell of the resultant plant, respectively?

Easy
Solution

Stock is the plant with roots which has same chromosome number as it has in vegetative cells. Scion is the one grafted to stock and its egg cell has haploid chromosome number15. 

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