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Tongue rolling allele is dominant (R) Non tongue rolling allele is recessive (r )

Tongue rolling allele is dominant (R) Non tongue rolling allele is recessive (r ) Both parents are both heterozygous for the tongue rolling gene. What is the probability that: a) their firstborn child is a non tongue roller? b) the second child is also a non tongue roller?

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Tongue rolling allele is dominant (R) Non tongue rolling allele is recessive (r )

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  1. Tongue rolling allele is dominant (R) Non tongue rolling allele is recessive (r) Both parents are both heterozygous for the tongue rolling gene. What is the probability that: a) their firstborn child is a non tongue roller? b) the second child is also a non tongue roller? c) the third child is a tongue roller?

  2. Mother = Rr Father = Rr Mother R r RR R Rr Father r Rr rr

  3. Farmer Ted has a curly tailed male pig and wants to know whether it is pure breeding or not. He has asked you to find out for him. He pays you $400. Curly tails (T) are dominant over straight tails (t). Write your answer on your book

  4. Pure Breeding Male = TT Female= tt Male T T Female Tt t Tt t Tt Tt

  5. NOT Pure Breeding Male = Tt Female= tt Male T t Female Tt t tt t Tt tt

  6. Punnett Squares are used to determine the probability of an offspring having a particular genotype. Test Cross & Pure Breeding Pure Breeding = Homozygous Genotype In genetics a test cross is used to determine if an individual exhibiting a dominant trait is homozygous or heterozygous (i.e. pure breeding or not)

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