GCSE Variation and evolution

The observable features of an organism, influenced by an organism's genome and the interaction of the organism with its environment is referred to as:

• A mutation

• The phenotype

• The genotype

• Evolution

True or False: Variation is caused by genetic mutations.

• True

• False

Differences in the characteristics of individuals in a population is called:

• Variation

• Deviation

• Mutation

• Selection

This graph is called a histogram. What type of variation does it show?

• Continuous variation

• Discontinuous variation

Examples of discontinuous variation include:

• Blood type

• Length of leaf

• Fur colour

• Height

• Weight

_________________________________ is a type of variation that can hold any numerical value on a scale.

• Selective variation

• Discontinuous variation

• Continuous variation

• Adaptive variation

The process where variation gives rise to phenotypes that are best suited to an organism's environment, increasing the chances that the organism will successfully reproduce.

• Descent with modification

• Selective breeding

• Artificial selection

• Natural selection

Examples of variation caused by environmental factors includes:

• Blood type

• Scars

• Tattoos

• Inherited disorders

• Language spoken

__________________________________ is a type of variation that is discrete and can be arranged into categories. This variation can also sometimes be numerical as long as the data cannot occupy every numerical value.

• Continuous variation

• Selective variation

• Adaptive variation

• Discontinuous variation

Variation can be caused by:

• Environmental factors

• A combination of genetic and environmental factors

• Genetic factors

• All of the options are correct