How do we describe the structure of DNA?

• Double helix

• Double strand

• Double molecule

• Double gene

What part of the cell contains DNA?

• Cytoplasm

• Nucleus

• Cell membrane

• Mitochondria

What do you call a short section of DNA that codes for a particular characteristic?

• Chromosome

• Helix

• Gene

• Nucleus

True or False?

Variation is the difference in characteristics between different species.

• True

• False

Eye colour is an example of a characteristic that shows...

• Inherited variation

• Environmental variation

• Species variation

• Biological variation

Environmental variation is caused by an individual's...

• Genes

• Parents

• Siblings

• Surroundings

The development of a species over time is called...

• Evolution

• Inheritance

• Survival of the fittest

• Variation

The process by which individuals that are better adapted to their surroundings survive and reproduce, passing on their genes, is called...

• Evolution

• Inheritance

• Natural Selection

• Variation

True or False?

A giraffe is less likely to survive and reproduce if it is poorly adapted to its environment.

• True

• False

Which scientist first proposed the theory of natural selection?

• Darwin

• Watson

• Crick

• Einstein