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Anam fatma Asked a Question
October 20, 2021 10:04 pmpts 25 pts
  • IIT JAM
  • Biotechnology (BT)

23. a plant cell has a triploid number of 18 chromosomes. how many chromatids are present at the beginning or prophase of mitosis? (1) 32 (2) 54 (3) 36 (4) 18

23. A plant cell has a triploid number of 18 chromosomes. How many chromatids are present at the beginning or prophase of mitosis? (1) 32 (2) 54 (3) 36 (4) 18
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  • Sarla sahu
    during the prophase each chromosome have 2 sister chromatids. So the no of chromosome is 18 (given). 18×2=36
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  • Mohanchaitanya reddy thankyou
    Since prophase starts after interphase and in interphase(particularly in S-Phase) amount of DNA will get doubled because each chromosome will get duplicated and consists Two sister...
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  • Sheetal kirodiwal
    option b (54) is the right answer because as we know in triploid cell with 18 chromosome triplet condition 3n = 54 during prophase
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