CBSE Class 10 Answered
The chromosome number in gynoecium of hexaploid wheat is 42, then the chromosome number in endosperm and egg cell will be-
1)21 and 7 respectively
2)126 and 21 respectively
3)63 and 21 respectively
4)63 in each
Asked by Renuka Ganesh | 23 Apr, 2014, 11:30: AM
Expert Answer
Hexaploid wheat implies that it has six sets of chromosomes. The somatic cells are hexaploid, with six sets of chromosomes, 2n = 42 while the gametes are haploid , n = 21. Endosperm is triploid (3n) while the egg cell is haploid (n). So, the number of chromosomes in endosperm and egg cell will be 63 (3n=21×3=63) and 21 (n=21) respectively.
Answered by | 23 Apr, 2014, 05:23: PM
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