Question

If a stock has 2n = 48 and scion microspore cell has 2n = 24 then root cell and the microspores will have how many chromosomes respectively?

• A. 12,48
• B. 48, 12
• C. 24, 12
• D. 24, 96

Answer 1

Answer: (B)

48, 12

In angiosperms, the root cells divide by the process of mitosis whereas the microspore cells divide by the process of meiosis. The number of chromosomes in daughter cells produced after mitosis in root cells will be same as the parent cell, whereas the number of chromosomes in daughter cells produced after meiosis in microspore mother cell be one half. Thus, the number of chromosomes in root cells and microspores will be 48 and 12 respectively. So, the correct answer is option B.