Describes an allele that will always affect a phenotype as opposed to a recessive allele, whose effect will not be seen if a dominant allele is present
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Recessive allele
Describes an allele that will only affect the phenotype if the other allele is also recessive. it has no affect if the other allele is dominant
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Alleles
Most genes come in different versions
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Genotype
The alleles of a certain characteristic that are found in an organism
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Zygote
A fertilised egg cell
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Heterozygous
Different alleles e.g. Bb
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Phenotype
The characteristic produced by a certan set of alleles /The expressed characiteristic e.g. brown eyes, black eyes
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Homozygous
Identical alleles
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Other cards in this set
Card 2
Front
Recessive allele
Back
Describes an allele that will only affect the phenotype if the other allele is also recessive. it has no affect if the other allele is dominant
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