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Course: AP??/College Biology?>?Unit 5
Lesson 2: Mendelian genetics- Introduction to heredity
- Fertilization terminology: gametes, zygotes, haploid, diploid
- Alleles and genes
- Worked example: Punnett squares
- Mendel and his peas
- The law of segregation
- The law of independent assortment
- Probabilities in genetics
- Pedigrees
- Mendelian genetics
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Mendelian genetics
Problem
Cystic fibrosis is an autosomal recessive disease caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. Individuals with cystic fibrosis have sticky mucus in their lungs and other organs. This mucus can lead to infections and additional complications.
Which of the following pedigrees shows a likely pattern of inheritance in a family with a history of cystic fibrosis?