Genetics

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Biology

GCSE Biology

WJEC

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6 Terms

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Homozygous

Two identical alleles for a characteristic (BB or bb)

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Heterozygous

Different alleles for a characteristic (Bb)

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Genotype

Alleles present for a particular characteristic - genetic makeup

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Phenotype

Physical appearance of an individual for particular characteristic - eg eye colour

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Dominant

Show when phenotype is present (Capital letter)

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Recessive

Hidden when dominant allele is present (Lowercase letter)