The number of chromosomes in the leaf cells of a male plant is 40 and in thestem cells of a female plant is 60. If they are artificially hybridised, what will bethe number of chromosomes in the endosperm?
Question
The number of chromosomes in the leaf cells of a male plant is 40 and in thestem cells of a female plant is 60. If they are artificially hybridised, what will bethe number of chromosomes in the endosperm?
Solution
The number of chromosomes in the endosperm of a plant is typically triploid, or three times the haploid number of chromosomes.
In this case, the male plant contributes one set of chromosomes (n=20) and the female plant contributes two sets of chromosomes (n=30).
So, if they are artificially hybridised, the number of chromosomes in the endosperm would be 20 (from male) + 30*2 (from female) = 80 chromosomes.
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