The image depicts a family pedigree chart. It provides a graphical representation of family relationships and the inheritance of traits. - **Katherine Summers** is represented by a black circle, which indicates she carries the trait of interest. - **Christopher Summers** is represented by an unfilled square, indicating he does not carry the trait. - Their children are **Alex Summers** (an unfilled square) and **Scott Summers** (a black square). - **Scott Summers** is connected to **Jean Grey**, represented by a black circle, signifying she carries the trait. - They have three children: - **Nathan Summers**, represented by an unfilled square, - **Rachel Summers**, represented by a circle with a line through it, indicating a different or carrier status, and - **Ruby Summers**, represented by a black circle. This chart is a useful tool for visualizing genetic inheritance patterns and understanding familial relationships concerning genetic traits.

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Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.