Please use the following information to answer the question(s) below.
Figure 11.2 shows a pedigree chart for a family, some of whose members exhibit the dominant trait, W. Affected individuals are indicated by a dark square or circle. Figure 11.2
-What is the likelihood that the offspring of IV-3 and IV-4 will have the trait?

Question

Please use the following information to answer the question(s) below.
Figure 11.2 shows a pedigree chart for a family, some of whose members exhibit the dominant trait, W. Affected individuals are indicated by a dark square or circle.  Figure 11.2
-What is the likelihood that the offspring of IV-3 and IV-4 will have the trait?

Quizplus · Accepted Answer

IV-3 is a carrier (heterozygous) for the trait, so there is a 50% chance that she will pass the trait allele to her offspring. IV-4 is unaffected, so we assume she does not carry the trait allele. Therefore, the offspring have a 50% chance of inheriting the trait allele from IV-3, but a 0% chance of inheriting it from IV-4. This gives a 50% chance that the offspring will have the trait.

Please Use the Following Information to Answer the Question(s) Below