What will be the number of DNA AND CHROMOSOME respectively after S phase if number of chromosome in root tip cells are 20 -
1)20&20
2)20 & 40
3)40&40
4)40&20
Question 37 In tobacco plant, the male gametes have twenty-four chromosomes. What is the number of chromosomes in the female gamete? What is the number of chromosomes in the zygote??