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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?
 
a. An organism will have the _________ number of chromosomes, whether it is male or female.
 
b. The female gamete of the tobacco plant has 24 chromosomes, and the male gamete of the tobacco plant has 42 chromosomes.
 
c. The fertilised egg produced by the union of male and female gametes is known as a .