Question Constellation Sign up for free AQA · GCSE · Biology · Higher
Evidence for shared genus
Plants in the same genus as potatoes have been studied by scientists. Describe one way a new plant species could be identified as being in the same genus as potatoes.
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Marking points
- 1 Compares a named or detailed structural/phenotypic characteristic.
- 2 Identifies similarity in DNA, genes or genetic material without claiming they are identical.
- 3 Identifies similar or the same biochemistry.
- 4 Uses the shared first part of the binomial/scientific name.
Full-mark answer
Analyse the DNA of the new species and compare it with potato DNA; species in the same genus should have similar genetic material.
Why this answer loses marks
It looks similar.
An unqualified appearance claim is ignored; specify a detailed characteristic or another accepted comparison route.