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MCAT Biological and Biochemical Foundations of Living Systems

Genetics and Inheritance

Learn Genetics and Inheritance in MCAT Biological and Biochemical Foundations of Living Systems from the production AIPH study guide.

Study guide topics

Cell Structure and FunctionGenetics and InheritanceBiological MoleculesCellular Respiration and MetabolismMolecular Genetics and Gene ExpressionHuman Body Systems IntegrationGenetic Testing and Personalized MedicineBiotechnology in Everyday LifeDisease Prevention and VaccinationActive Recall and Spaced RepetitionCritical Reading and Data InterpretationTime Management and Pacing

Basic Concepts

In a nutshell: Genetics explains how traits are inherited and how genetic variation arises.

## Passing Traits from One Generation to the Next Genetics explains how traits and characteristics are passed down from parents to offspring. This field combines Mendel's foundational experiments with modern molecular biology. ### Mendelian Inheritance Genes are inherited in predictable patterns: - **Dominant and Recessive Alleles:** Dominant alleles mask the effects of recessive ones. - **Punnett Squares:** Visual tools to predict offspring genotypes. ### Molecular Genetics DNA is the molecule that stores genetic information. Genes, segments of DNA, code for proteins that determine traits. ### Variations and Mutations Genetic mutations can introduce new traits—sometimes beneficial, sometimes harmful. This variation drives evolution and diversity. ### Real-Life Applications Genetic testing can help diagnose diseases or identify carriers of genetic disorders, empowering informed health choices.

Examples

  • Eye color inheritance follows Mendelian patterns.
  • Cystic fibrosis results from a mutation in a single gene.
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