StemUp: AQA A level Biology 3.4.7 Investigating diversity

What is interspecific biodiversity? (1)

Refers to the variation between organisms of different species

What is infraspecific biodiversity? (2)

- Refers to the variation within a species

- Between individual organisms

How can biodiversity be investigated using characteristics? (2)

- By measuring the frequency of observable characteristics

- Often by dividing the area into a grid and using random sampling

How can the amino acid sequence of proteins be used to investigate biodiversity? (2)

- Encoded by DNA and mRNA

- Can be analyzed to investigate biodiversity

How can the base sequence of DNA be used in biodiversity studies? (2)

- Can be examined to determine genetic similarities

- And differences between species or individuals

How can the base sequence of mRNA be used to investigate biodiversity? (1)

Can be studied to assess genetic relationships and variations

What indicates a close relationship between species or organisms? (2)

- The more closely related species or organisms are

- The more similar their genetic sequences are