9. The pedigree below shows the occurrence of Becker muscular dystrophy in a family. Becker muscular dystrophy causes muscle weakness. Key Becker Normal muscular dystrophy Male Female O Based on this pedigree, which of the following best describes the inheritance pattern for Becker muscular dystrophy? C. Sex-linked recessive trait A. Polygenic trait B. Codominant trait D. Autosomal dominant trait

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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.