Question

In tobacco plant, the male gametes have 24 chromosomes.What is the number of chromosomes in the female gamete and what is the number of chromosomes in the zygote?

• A. Number of chromosomes in female gamete is 24, number of chromosomes in zygote is 48
• B. Number of chromosomes in female gamete is 20, number of chromosomes in zygote is 48
• C. Number of chromosomes in female gamete is 24, number of chromosomes in zygote is 40
• D. Number of chromosomes in female gamete is 20, number of chromosomes in zygote is 40

Answer 1

The correct option is A Number of chromosomes in female gamete is 24, number of chromosomes in zygote is 48

The number of chromosomes in an organism will be the same irrespective of whether it is male or female. As the male gametes in tobacco plant has 24 chromosome, the female gamete of the same plant also posses 24 chromosomes.
Zygote is the fertilized egg that results from the union of male and female gametes. As a result, the zygote will have 48 chromosomes.
Thus, the correct answer is option (A).