Question

How many mitosis and meiosis are required for the formation of 900 male gametes starting from PMC, if only 3 microspores remains functional?

• A. Mitosis $\to$ 900, Meiosis $\to$ 150
• B. Mitosis $\to$ 600, Meiosis $\to$ 300
• C. Mitosis $\to$ 900, Meiosis $\to$ 300
• D. Mitosis $\to$ 600, Meiosis $\to$ 150

Answer 1

The correct option is A Mitosis $\to$ 900, Meiosis $\to$ 150

1 PMC $\stackrel{1meiosis}{\to }$
i.e. 1 Meiosis – 6 gametes
$\frac{1}{6}$ Meiosis – 1 gamete
$\frac{1}{6}\times 900Meiosis\to 900gametes$
150 Meiosis
6 male gamete = 6 mitosis
900 male gamete = 900 mitosis.