Sample exam questions - genes, inheritance and selection - OCR GatewayMultiple choice questions

Understanding how to approach exam questions helps to boost exam performance. Question types will include multiple choice, structured, mathematical and practical questions.

Part ofBiology (Single Science)Genes, inheritance and selection

Multiple choice questions

Multiple choice questions are perhaps the easiest to complete, you simply put a cross in a box. However, the questions often have two answers that could, at first glance, be correct. Don’t make the mistake of reading the first answer and thinking this is correct without checking all the others.

If it says 'Tick one box', you must tick one box. If you leave it blank or tick two or more boxes you will get zero marks. These multiple choice questions will not start with command words like ‘describe’ or ‘explain’. They will be written in the form of a question like ‘What…?’ or ‘Why…?’.

There will be more multiple choice questions on the Foundation paper.

Questions taken from the OCR website.

Sample question 1 - Foundation

Question

What are the names of the two scientists who first suggested the theory of natural selection? [1 mark]

Tick one box.

ADarwin and Mendel
BMendel and Wallace
CWallace and Darwin
DWatson and Crick
A
Darwin and Mendel
B
Mendel and Wallace
C
Wallace and Darwin
D
Watson and Crick

OCR Gateway, GCE Biology, Paper J247, 2016.

Sample question 2 - Foundation

Question

The DNA of an unborn baby can be found in the blood sample of the mother. This DNA is tested to see which chromosomes are present.

Which conclusion is correct? [1 mark]

Tick one box.

AIf a Y chromosome is present then it must be a boy.
BIf a Y chromosome is present then it must be a girl.
CIf an X is present then it must be a boy.
DIf an X chromosome is present then it must be a girl.
A
If a Y chromosome is present then it must be a boy.
B
If a Y chromosome is present then it must be a girl.
C
If an X is present then it must be a boy.
D
If an X chromosome is present then it must be a girl.

OCR Gateway, GCE Biology, Paper J247, 2016.

Sample question 3 - Higher

Question

A mouse has a diploid chromosome number of 40.

Which row in the table shows the correct number of chromosomes in each cell? [1 mark]

Tick one box.

Number of chromosomes in a mouse egg cellNumber of chromosomes in a mouse eye cell
A4040
B2020
C2040
D4020
Number of chromosomes in a mouse egg cell
Number of chromosomes in a mouse eye cell
A
40
40
B
20
20
C
20
40
D
40
20

OCR Gateway, GCE Biology, Paper J247 - Higher, 2016.

Sample question 4 - Higher

Question

FOP is a disorder that causes soft tissue in the body to turn to bone. It is caused by a dominant allele. People who have this condition are often infertile. Natural selection predicts that the number of children born with the condition will go down.

Which explantion can explain why the number of people with FOP is staying constant? [1 mark]

Tick one box.

AThe allele is being produced regularly by mutation.
BDominant alleles can remain hidden for generations.
CThe allele may increase the rate of meiosis.
DThe allele has no effect on a person's phenotype.
A
The allele is being produced regularly by mutation.
B
Dominant alleles can remain hidden for generations.
C
The allele may increase the rate of meiosis.
D
The allele has no effect on a person's phenotype.

OCR Gateway, GCE Biology, Paper J247 - Higher, 2016.