Please write clearly in block capitals.
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
GCSE
COMBINED SCIENCE: TRILOGY
Higher Tier
H
Biology Paper
2H
Monday 9 June 2025 Morning Time allowed: 1 hour 15 minutes
Materials For Examiner’s Use
For this paper you must have:
a ruler Question Mark
a scientific calculator. 1
2
Instructions
Use black ink or black ball-point pen. 3
Pencil should only be used for drawing. 4
Fill in the boxes at the top of this page. 5
Answer all questions in the spaces provided.
6
If you need extra space for your answer(s), use the lined pages at
the end of this book. Write the question number against your TOTAL
answer(s).
Do all rough work in this book. Cross through any work you do not want to be
marked.
In all calculations, show clearly how you work out your answer.
Information
The maximum mark for this paper is 70.
The marks for questions are shown in brackets.
You are expected to use a calculator where appropriate.
You are reminded of the need for good English and clear presentation in your answers.
IB/M/Jun25/G4006/E9
,8464/B/2H
, 2
DoDo
notnot
write
writethe
outside
There are no questions printed on this page outside
box the
DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED
IB/M/Jun25/8464/B/
2H
, 3
Do not write
0 1 This question is about genetics. outside the
box
The fur colour of rabbits is controlled by two
alleles.
0 1 .1 Draw one line from each term to the meaning of the term relating
to genetics in rabbits.
[3 marks]
Question 1 continues on the next page
IB/M/Jun25/8464/B/
2H
Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
GCSE
COMBINED SCIENCE: TRILOGY
Higher Tier
H
Biology Paper
2H
Monday 9 June 2025 Morning Time allowed: 1 hour 15 minutes
Materials For Examiner’s Use
For this paper you must have:
a ruler Question Mark
a scientific calculator. 1
2
Instructions
Use black ink or black ball-point pen. 3
Pencil should only be used for drawing. 4
Fill in the boxes at the top of this page. 5
Answer all questions in the spaces provided.
6
If you need extra space for your answer(s), use the lined pages at
the end of this book. Write the question number against your TOTAL
answer(s).
Do all rough work in this book. Cross through any work you do not want to be
marked.
In all calculations, show clearly how you work out your answer.
Information
The maximum mark for this paper is 70.
The marks for questions are shown in brackets.
You are expected to use a calculator where appropriate.
You are reminded of the need for good English and clear presentation in your answers.
IB/M/Jun25/G4006/E9
,8464/B/2H
, 2
DoDo
notnot
write
writethe
outside
There are no questions printed on this page outside
box the
DO NOT WRITE ON THIS PAGE
ANSWER IN THE SPACES PROVIDED
IB/M/Jun25/8464/B/
2H
, 3
Do not write
0 1 This question is about genetics. outside the
box
The fur colour of rabbits is controlled by two
alleles.
0 1 .1 Draw one line from each term to the meaning of the term relating
to genetics in rabbits.
[3 marks]
Question 1 continues on the next page
IB/M/Jun25/8464/B/
2H
