Evaluate the following pedigree, and answer the questions below. Who is/are the common ancestor(s) of the inbred individual(s)?

Key Concepts

Pedigree Analysis

Pedigree analysis is a method used in genetics to trace the inheritance of traits through generations in a family. It involves creating a diagram that represents family relationships and the presence or absence of specific traits. By analyzing the pedigree, one can identify patterns of inheritance, such as autosomal dominant or recessive traits, and determine potential carriers of genetic conditions.

Inbreeding

Inbreeding refers to the mating of individuals who are closely related genetically, which can increase the likelihood of offspring inheriting genetic disorders. In a pedigree, inbred individuals often share common ancestors, which can be identified by tracing their lineage. Understanding inbreeding is crucial for evaluating genetic risks and the potential for expressing recessive traits.

Common Ancestors

Common ancestors are individuals from whom two or more individuals are directly descended. In the context of a pedigree, identifying common ancestors helps to understand the genetic relationships and potential shared traits among individuals. This concept is essential for evaluating inbreeding and assessing the genetic health of a population, as it highlights the genetic connections that may influence trait inheritance.