https://www.khanacademy.org/science/ka-biology-grade-12/x406cf103e0507862:in-in-principles-of-inheritance-and-variation/x406cf103e0507862:in-in-introduction-to-mendelian-genetics/v/an-introduction-to-mendelian-genetics 2023-08-14T21:12:46.061619254Z An Introduction to Mendelian Genetics Let's explore the kinds of inheritance patterns seen in Mendelian Genetics! Uncover the secrets of alleles, and explore the difference between homozygous and heterozygous traits. Learn about dominant and recessive traits, and how they influence genotypes and phenotypes. Finally, discover how a Punnett Square can predict gene inheritance. By Ross Firestone.   Ross Firestone video https://cdn.kastatic.org/googleusercontent/bK4CcZffm4NYLW5CWvv-E10ci6JY7XCM04FlyjR7srH0ndWBP0f6_aU3B-8kGmJ-402XpH2sr889CooNEJC1xnPj An Introduction to Mendelian Genetics Let's explore the kinds of inheritance patterns seen in Mendelian Genetics! Uncover the secrets of alleles, and explore the difference between homozygous and heterozygous traits. Learn about dominant and recessive traits, and how they influence genotypes and phenotypes. Finally, discover how a Punnett Square can predict gene inheritance. By Ross Firestone.   https://cdn.kastatic.org/ka-youtube-converted/NR3779ef9yQ.mp4/NR3779ef9yQ.mp4 310 Heredity and variation https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:inheritance-and-variation-of-traits/x230b3ff252126bb6:mendelian-genetics/v/mendelian-inheritance-and-punnett-squares 2022-09-24T04:45:13.131282509Z Mendelian inheritance and Punnett squares Gregor Mendel followed patterns of inheritance in pea plants, allowing him to elucidate the rules of inheritance, which we can now attribute to the behavior of chromosomes during meiosis. Punnett squares can be used to predict the outcome of a cross between two parents. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/8037ebfd-f27f-4233-96fa-25aa6d4d39d0_1280_720_base.png Mendelian inheritance and Punnett squares Gregor Mendel followed patterns of inheritance in pea plants, allowing him to elucidate the rules of inheritance, which we can now attribute to the behavior of chromosomes during meiosis. Punnett squares can be used to predict the outcome of a cross between two parents. https://cdn.kastatic.org/ka-youtube-converted/OhYOfTczCk4.mp4/OhYOfTczCk4.mp4 444 Heredity and variation https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:inheritance-and-variation/x0c5bb03129646fd6:reproduction-and-genetic-variation/v/worked-examples-punnett-squares 2022-10-19T00:04:19.365252683Z Worked examples: Punnett squares Solve Punnett squares that include heterozygous and homozygous genotypes. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/dbf7637e-0b33-4008-bf72-49ddc32fc209_1280_720_base.png Worked examples: Punnett squares Solve Punnett squares that include heterozygous and homozygous genotypes. https://cdn.kastatic.org/ka-youtube-converted/VH1lAfZL_fU.mp4/VH1lAfZL_fU.mp4 407 Heredity and variation https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:inheritance-and-variation/x0c5bb03129646fd6:reproduction-and-genetic-variation/v/genetics-vocabulary 2022-10-19T00:04:19.365252683Z Genetics vocabulary Learn about the terms allele, genotype, phenotype, dominant, recessive, heterozygous, and homozygous. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/e65a6c41-df6d-4bd1-9c24-eac69baee425_1280_720_base.png Genetics vocabulary Learn about the terms allele, genotype, phenotype, dominant, recessive, heterozygous, and homozygous. https://cdn.kastatic.org/ka-youtube-converted/kvwK63Mwhw0.mp4/kvwK63Mwhw0.mp4 348 Heredity and variation https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:inheritance-and-variation-of-traits/x230b3ff252126bb6:complex-patterns-of-inheritance/v/co-dominance-and-incomplete-dominance 2024-06-28T21:00:15.59562973Z Co-dominance and incomplete dominance In genetics, there are three main dominance patterns: complete dominance (only one dominant allele appears in the phenotype), co-dominance (both alleles are visible in the phenotype), and incomplete dominance (a mix of alleles creates a new phenotype). These patterns help us understand how traits are passed down from one generation to the next. Ross Firestone video https://cdn.kastatic.org/googleusercontent/ejEmGeUqfxVQe-4nug7h-b0nrhmopyBkwemuK82f70iaQJvew7r5nLDZ-QAl8Opu_Eupvh7namueGtYKT6rrEZdPLw Co-dominance and incomplete dominance In genetics, there are three main dominance patterns: complete dominance (only one dominant allele appears in the phenotype), co-dominance (both alleles are visible in the phenotype), and incomplete dominance (a mix of alleles creates a new phenotype). These patterns help us understand how traits are passed down from one generation to the next. https://cdn.kastatic.org/ka-youtube-converted/OVM68-0YVWI.mp4/OVM68-0YVWI.mp4 209 Heredity and variation https://www.khanacademy.org/science/hs-bio/x230b3ff252126bb6:inheritance-and-variation-of-traits/x230b3ff252126bb6:complex-patterns-of-inheritance/e/apply-complex-patterns-of-inheritance 2026-04-27T10:10:46.754795089Z Apply: Complex patterns of inheritance Apply your understanding of complex patterns of inheritance in this set of free, standards-aligned practice questions. Megan Cohn exercise