What is the likelihood that the progeny of IV- 3 and IV- 4 will have the trait?

Question

Quizplus · Accepted Answer

The likelihood that the progeny of IV-3 and IV-4 will have the trait depends on the inheritance pattern of the trait in question. Without specific information about the trait (e.g., whether it's dominant, recessive, linked to a particular chromosome, etc.), it's challenging to provide a precise explanation. However, a common scenario where a specific percentage like 50% is mentioned involves autosomal dominant or recessive inheritance patterns. In the case of autosomal dominant traits, if one parent is heterozygous (carrying one copy of the dominant allele) and the other parent does not carry the allele, each child has a 50% chance of inheriting the trait. For autosomal recessive traits, if both parents are carriers (each having one copy of the recessive allele), there is a 25% chance of a child being affected, a 50% chance of a child being a carrier like the parents, and a 25% chance of the child not carrying the allele at all. Given the options and without specific genetic details, the answer reflects a common scenario rather than a detailed genetic explanation.

What Is the Likelihood That the Progeny of IV- 3