Genetics Definitions

Gene
A sequence of bases on a DNA molecule which codes for certain characteristics e.g. gene for eye colour
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Allele
A form of gene e.g. the allele for blue eyes/brown eyes
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Genotype
They alleles a person has e.g. BB, Bb or bb
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Phenotype
The characteristics the allele produces e.g. brown eyes
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Dominant
The allele who's characteristic appears in the phenotype even if there's only one copy of it e.g. Brown eyes have either BB or Bb
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Recessive
An allele who's characteristic only appears in the phenotype if two copies are present e.g. blue eyes are only bb
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Homozygous
When they have two of the same alleles e.g. BB or bb
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Heterozygous
When they have two different alleles e.g. Bb
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Other cards in this set

Card 2

Front

Allele

Back

A form of gene e.g. the allele for blue eyes/brown eyes

Card 3

Front

Genotype

Back

Preview of the front of card 3

Card 4

Front

Phenotype

Back

Preview of the front of card 4

Card 5

Front

Dominant

Back

Preview of the front of card 5
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