15KKealydcc 15KKealydcc
  • 25-05-2020
  • Biology
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How to solve these questions

How to solve these questions class=

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lisahend18
lisahend18 lisahend18
  • 26-05-2020

Answer:

(i) An allele is a variant of a gene, can either be short or tall.

Dominant = the tall allele that "trumps" the short allele. if a dominant and recessive allele is present (heterozygous) then the dominant phenotype will be shown.

(ii) David's eyes are Brown

(iii) Sarah's eyes are blue

(iv) David - B, b

Sarah - b, b

(v) Possible genotypes include Bb and bb. These give the phenotypes of brown eyes or blue eyes.

(vi) The chance for blue eyes is 50% (or 1:1 ratio)

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