2 hours allowed.
You may use a scientific calculator and a ruler with millimetre
measurements.
Answer all questions in section A.
Answer one question from section B.
Possible Marks
Question
marks gained
Grade boundaries 1 11
2 8
These are VERY rough guesses! Getting a
3 9
B on this paper does not guarantee you the
4 9
same mark in the exam.
5 16
SECTION B 25
Total 78
• A* 65%
• A 55%
• B 45%
• C 40%
• D 35%
• E 30%
Primrose Kitten – YouTube Tutorials for GCSE and A-Level
Gedownload door Revision Materials (www.daviemungaindung2022@gmail.com)
, lOMoARcPSD|41093378
Members of my YouTube channel can get access to a full video walkthrough of the
2023 papers with lots of guidance and advice on how to answer the questions.
Primrose Kitten – YouTube Tutorials for GCSE and A-Level
Gedownload door Revision Materials (www.daviemungaindung2022@gmail.com)
, lOMoARcPSD|41093378
SECTION A
Answer all questions in this section.
01
The Hawaiian Islands have the most diverse collection of Drosophilid flies
in the world with approximately 800 different species having been
identified.
All of the species have been traced back to a single common ancestor from
mainland USA that colonised the islands millions of years ago. It is
hypothesised that this could have been a single fertilised female blown
across in a storm or trapped in a piece of fruit stuck to a bird.
a) What is a gene pool?
[1 mark]
______________________________________________________
______________________________________________________
b) Explain how the Hawaiian species of flies could have evolved.
[6 marks]
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
______________________________________________________
Primrose Kitten – YouTube Tutorials for GCSE and A-Level
Gedownload door Revision Materials (www.daviemungaindung2022@gmail.com)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller StudyTimeOT. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £9.26. You're not tied to anything after your purchase.