Daily Practice · GCSE Science

Daily Practice - GCSE Science

25th October 1995

5 questions · GCSE · 584 questions in this band

1
Inheritance, Variation and Evolution
Define the term allele.
2
DNA, Genetics and Inheritance
State whether cystic fibrosis is caused by a dominant or a recessive allele.
3
Variation, Evolution and Selection
Give one example of variation that is caused purely by the environment rather than by genes.
4
Ecology
Define community, in ecological terms.
5
Ecosystems, Adaptation and Feeding Relationships
Explain why a pyramid of biomass is never wider at the top than at the bottom.

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