pure breed: monohybrid cross

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5 Terms

1
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what is pure breeding?

both parents have 2 of the same alleles (homozygous) e.g. Bb bb BB

2
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steps for a genetic cross

  1. parental genotypes and gametes produced

  2. cross the male gamete alleles with the female gamete alleles in a punnet square

  3. genotype and phenotype ratios

<ol><li><p>parental genotypes and gametes produced</p></li><li><p>cross the male gamete alleles with the female gamete alleles in a punnet square</p></li><li><p>genotype and phenotype ratios</p></li></ol><p></p>
3
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ratios of a F1 pure breed cross

100% genotype and phenotype

4
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what is the F2 generation?

when 2 of the F1 offspring are crossed together

5
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ratios of a F2 generation pure breed cross

1:2:1 genotype , 3:1 phenotype