Gce Model Questions Vol1 2021 Biology Question 2

Practice essay / theory question 2 from the 2021 Gce Model Questions Vol1 Biology examination. This question covers cell division, mitosis, meiosis .

Gce Model Questions Vol1 2021 Biology Essay / Theory
Topics: cell division mitosis meiosis
Question 2 GCE_MODEL_QUESTIONS_VOL1 • 2021 • BIOLOGY • essay
Gce Model Questions Vol1 2021 Biology Question 2 diagram

The labelled diagram shows an animal cell at successive stages of mitosis. Each panel (A, B, C and D) depicts a different stage and key structures such as chromosomes, spindle fibres and centrioles are indicated.

Question Parts

( a )
Identify the stage of mitosis represented in each panel (A, B, C and D).
( b )
For the stage you identified as Metaphase, describe (i) the arrangement of chromosomes and (ii) the role of the spindle fibres.
( c )
Compare mitosis with Meiosis I in terms of (i) chromosome number in the resulting cells and (ii) generation of genetic variation.
( d )
A somatic cell is diploid with 46 chromosomes. Calculate the number of chromosomes present in each daughter cell after (i) mitosis and (ii) Meiosis II. Show the reasoning for each calculation.
( e )
Discuss two biological situations where rapid cell division is advantageous and two situations where it can be detrimental. Provide a brief explanation for each case.

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About This Question

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

The question covers cell division, mitosis, meiosis .

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