How does the process of recombination add to the

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13. How does the process of recombination add to the observed genetic variation of daughter cells? (1)
14. Examine the Punnett squares shown in Infographics 11.7 and 11.8 in your textbook and fill in this table: (10)
Cystic Fibrosis: Consider the case of two parents who are carriers for CF. Let A be the normal CFTR allele and a be the defective CFTR allele that causes CF, which means that the normal allele ( A ) is dominant. Huntington's Disease Consider the case of two parents who are heterozygous for Huntington's Disease. Let T be the Huntington's defective allele and be the normal allele, which means that the defective allele ( T ) is dominant. What is the chance a t 25% What is the chance
child born of these parents will have genotype AA ? a child born of these parents will have genotype TT ? What is the chance a child born of these 50% What is the chance a child born of these
parents will have genotype Aa ? parents will have genotype Tt ? What is the chance a child born of these 25% What is the chance a child born of these
parents will have genotype aa ? parents will have genotype tt ? What is the chance a 25% What is the chance
child born of these parents will have CF? a child born of these parents will have
What is the chance a 75% What is the chance
child born of these parents will be unaffected by CF? a child born of these parents will be unaffected by Huntington’s? What is the chance a child born of these parents will be a carrier of CF? 50% What is the chance a child born of these parents will be a carrier of Huntington’s?
15. If one parent is a CF carrier (genotype Aa ) and the other parent has CF (genotype aa ): (2) What would be the probability for this couple to have a healthy child, without CF (genotype AA or Aa )?

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