Waec Model Questions Vol1 2021 Biology Question 2

Practice essay / theory question 2 from the 2021 Waec Model Questions Vol1 Biology examination. This question covers Cell Division .

Waec Model Questions Vol1 2021 Biology Essay / Theory
Topic: Cell Division
Question 2 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • essay
Waec Model Questions Vol1 2021 Biology Question 2 diagram

The diagram depicts the stages of mitosis in a plant cell, from prophase through cytokinesis.

Question Parts

( a )
Label each stage shown in the diagram and state one key event that characterises that stage.
( b )
A diploid somatic cell (2n) enters mitosis. Calculate the percentage increase in the number of chromosome units when the cell reaches metaphase, showing all steps of your reasoning.
( c )
During meiosis I, a mutagen causes nondisjunction in anaphase I, producing a gamete with an extra chromosome. Explain how fertilisation of this gamete with a normal haploid gamete could affect the resulting zygote, and give one possible phenotypic consequence in the offspring.

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About This Question

This is Waec Model Questions Vol1 2021 Biology Question 2. It is one of the essay questions from the 2021 Waec Model Questions Vol1 Biology examination.

The question covers Cell Division .

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