Bitesize has changed! We're updating subjects as fast as we can. Visit our new site to find Bitesize guides and clips - and tell us what you think!

Home > Science > OCR Gateway Science Topics > Living for the future > Who am I? - Characteristics and inheritance

Science

Living for the future

Who am I? (Higher Tier) - Test

1.

What is the unit of inheritance called?

2.

Which statement about the inheritance of gender is correct?

3.

Identical twins are very similar to each other mainly because:

4.

Which of the following human characteristics is caused by environmental variation?

5.

What are alleles?

6.

In a genetic diagram, how is a dominant allele shown?

7.

Cystic fibrosis is caused by a recessive allele. How many faulty alleles must an individual with cystic fibrosis have inherited from their parents?

8.

You only need one copy of the faulty allele to have Huntington's disease. This means that the allele is: