the process that creates new individuals of a species

to pass on features from parent to offspring

the molecule that stores genetic information

differences between individuals within a species

Reproduction and variation

Science

Variation within species

Continuous and discontinuous variation: practical

Discontinuous variation: data handling and analysis

Continuous variation: data handling and analysis

Pupils will learn that variation between individuals of the same species means some individuals are better adapted to compete, which can lead to natural selection and cause the heritable characteristics of a species to change (evolve) over generations.

Pupils learned that organisms can be identified and classified into hierarchical groups based upon similarities and differences in their characteristics at the macroscopic and cellular levels.

This unit examines variation within species, both continuous and discontinuous, using measurements and graphical representations. It also emphasises objectivity, accuracy, precision, and repeatability in investigations, the use of appropriate techniques, and the effective presentation of data.

Variation (differences within species)

a group of organisms that can reproduce to produce fertile offspring

differences between members of the same species

the external space around an organism that influences it

the choices an individual makes as to how they live their life

related to the genetic material (DNA) and genes that an individual has

Variation that is categorical (divided into particular categories).

Variation that can take any one of many values over a continuous range.

A number generated by a measurement, such as a measurement of mass or length.

Variation which is categorical (divided into particular categories).

A graph displaying categorical data plotted as columns of equal width that do not touch. The height of each column represents the tally or frequency for the category (how many times it was observed).

Related to the genetic material (DNA) and genes that an individual has.

Variation which can take any one of many values over a continuous range.

A graph displaying continuous data plotted as points joined with a line.

A graph displaying continuous data grouped into ranges and plotted as columns that touch.

Factors in an organism’s surroundings that influence its features.

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Variation (differences within species)

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