Lesson: Chapter 6 — The Structure and Function of Plant and Animal Cells

Mitosis and meiosis 5 of 8 Reset answers

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Question 5

When two gametes each carrying n chromosomes are fertilised, what is the chromosome number of the zygote?

A n ÷ 2 B 4n C n D 2n

The right answer is the one marked above.

2n. When the gametes are fertilised and the zygote is formed the chromosomes come together again: n + n = 2n.

This is the step that restores what meiosis halved, which is how the number stays the same from generation to generation.

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