Dominant and Recessive Alleles- B5.1.4

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5 Terms

1
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what is an allele

variants of a gene that code for a certain characteristic

2
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what is a Dominant Allele- UC letter (B)

allele that is always expressed- phenotype

only ONE needed for characteristic to appear 

3
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what is a Recessive allele- LC letter (b)

Only expressed if both alleles are present

4
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what is a genotype

combination of alleles present- bb/BB/Bb

5
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what are the 3 types of a genotype

  1. BB -dominant homozygous with 2 copies of the same allele

  2. bb- recessive homozygous with 2 copies of the same allele

  3. Bb- heterozygous with different versions of allele