Two carriers of albinism have four children. One of their children is albino and the remaining three are normally pigmented. What is the probability that their next child will be albino?
Correct answer: B. 25%
- A. 0%
- B. 25%
- C. 75%
- D. 100%
Explanation
The probability that their next child will be albino is 25% (B). This is because both parents are carriers of the albinism gene, so there is a 1 in 4 chance that their child will inherit both recessive alleles and be albino. 2.
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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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