Achondroplasia is a dominant form of dwarfism.What is the chance of having an unaffected child from two.
Correct answer: B. 25
- A. 0
- B. 25
- C. 50
- D. 75
Explanation
Risk for homozygous achondroplasia when both parents have achondroplasia is 25% (as well as there being a 50% chance for heterozygous achondroplasia and 25% chance for a child with average stature).
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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