Studying Inheritance (AQA A-Level Biology): Flashcards

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Studying Inheritance
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Genotype

Complete genetic makeup of an organism

Phenotype

Observable or measurable characteristics of an organism

Gene

Specific DNA sequence that codes for a polypeptide

Allele

Different variant of the same gene

Locus

Specific position of a gene on a DNA molecule

Homozygous dominant

Both alleles identical & dominant; dominant trait shows

Heterozygous

Two different alleles; dominant allele usually expresses

Homozygous recessive

Both alleles identical & recessive; recessive trait shows

Codominance

Both alleles contribute equally to the phenotype

Multiple alleles

More than two forms of a gene exist in population

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