Daily Practice

GCSE Science

5th June 1990

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
A student places ten 1 m x 1 m quadrats at random across a school field of area 3000 m2 and counts a total of 45 dandelions across all ten quadrats. Estimate the total number of dandelions on the field.

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