a level biology a h42002biological diversity practice paper – set 1 2022
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H420/02
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A Level Biology A
H420/02 Biological diversity
Practice paper – Set 1
Time allowed: 2 hours 15 minutes
You must have:
• the Insert (inserted)
You may use:
• a scientific calculator
• a ruler (cm/mm)
First name
Last name
Centre Candidate
number number
INSTRUCTIONS
• Use black ink. You may use an HB pencil for graphs and diagrams.
• Complete the boxes above with your name, centre number and candidate number.
• Answer all the questions.
• Write your answer to each question in the space provided. If additional space is
required, use the lined page(s) at the end of this booklet. The question number(s)
must be clearly shown.
• Do not write in the barcodes.
INFORMATION
• The total mark for this paper is 100.
• The marks for each question are shown in brackets [ ].
• Quality of extended responses will be assessed in questions marked with an
asterisk (*)
• This document consists of 28 pages.
3 The diagram below shows the arrangement of chromosomes in a cell during metaphase 2.
Which letter indicates a homologous pair of chromosomes?
Your answer
[1]
4 Which of the rows, A to D, correctly describes how genetic variation is achieved during
meiosis?
Row Prophase 1 Metaphase1 Metaphase 2 Anaphase 2
independent
independent independent
crossing over of assortment of
A assortment of segregation of
sister chromatids homologous
chromatids chromatids
chromosomes
independent
crossing over of independent independent
assortment of
B non-sister segregation of segregation of
homologous
chromatids chromatids chromosomes
chromosomes
independent
crossing over of independent independent
assortment of
C non-sister assortment of segregation of
homologous
chromatids chromatids chromatids
chromosomes
independent
independent independent
crossing over of assortment of
D assortment of segregation of
sister chromatids homologous
chromatids chromosomes
chromosomes
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