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Summary AQA Biology: A Level Year 1 and AS - Topic 4 - Genetic information, variation and relationships between organisms £7.49   Add to cart

Summary

Summary AQA Biology: A Level Year 1 and AS - Topic 4 - Genetic information, variation and relationships between organisms

Summary of Topic 4: Genetic information, variation and relationships between organisms from the AQA Kerboodle textbook. No need to worry about summarising long chunky paragraphs of information or worrying about revision notes.

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  • June 6, 2023
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  • 2022/2023
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Some examples from this set of practice questions

1.

Adaption

Answer: A feature of an organism that increases its chance of survival in its environment. An adaptation may be anatomical, physiological or behavioural.

2.

Allele

Answer: A version of a gene.

3.

Anticodon

Answer: A sequence of three nucleotide bases at one end of a tRNA molecule that is specific to an mRNA codon.

4.

Artifical classification

Answer: A type of classification that divides organisms into groups based on analogous characteristics such as leaf shape, number of legs and type of wing.

5.

Binomial system

Answer: A universal system of naming organisms that consists of two parts: the generic name and the specific name, e.g. Homo sapiens.

6.

Biodiversity

Answer: The variety of genes, species and habitats within a particular area.

7.

Cellular proteome

Answer: The proteins expressed in a given type of cell.

8.

Chromatid

Answer: One strand of a replicated chromosome.

9.

Chromosome

Answer: A structure consisting of a long, coiled molecule of DNA and its associated proteins, by which genetic information is passed from generation to generation.

10.

Chromosome mutation

Answer: A change to the number or structure of chromosomes that can occur spontaneously.

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