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- https://bio.libretexts.org/Courses/Gettysburg_College/01%3A_Ecology_for_All/06%3A_The_Evolution_of_Populations_and_Species/6.03%3A_The_Hardy-Weinberg_EquilibriumThe Hardy-Weinberg law argues that the gene frequencies and genotype ratios in a randomly-breeding population remain constant from generation to generation. Evolution involves changes in the gene poo...The Hardy-Weinberg law argues that the gene frequencies and genotype ratios in a randomly-breeding population remain constant from generation to generation. Evolution involves changes in the gene pool, while a population in Hardy-Weinberg equilibrium shows no change. Hence, populations are able to maintain a reservoir of variability so that if future conditions require it, the gene pool can change.
- https://bio.libretexts.org/Courses/City_College_of_San_Francisco/Introduction_to_Genetics/04%3A_Mendelian_Genetics/4.05%3A_Laws_of_InheritanceThis page discusses Mendel's experiments with pea plants, which established key principles of inheritance, including the Law of Segregation and the Law of Independent Assortment. It highlights how tra...This page discusses Mendel's experiments with pea plants, which established key principles of inheritance, including the Law of Segregation and the Law of Independent Assortment. It highlights how traits are passed on through alleles, with dominant alleles affecting phenotypes and a typical 3:1 ratio observed in monohybrid crosses.
- https://bio.libretexts.org/Courses/City_College_of_San_Francisco/Introduction_to_Genetics/09%3A_Mutation_and_Variation/9.08%3A_Linkage_and_Mapping/9.8.05%3A__Inferring_Recombination_From_Genetic_DataThis page explores the difficulties of inferring allele arrangements in genetic studies without direct chromosome analysis. It highlights the importance of parental genotypes in determining allele con...This page explores the difficulties of inferring allele arrangements in genetic studies without direct chromosome analysis. It highlights the importance of parental genotypes in determining allele configurations (cis or trans) and details an experiment with dihybrid organisms from pure-breeding lines. A testcross with recessive individuals helps identify gamete genotypes, enabling calculation of recombination frequencies from observed phenotypes.
- https://bio.libretexts.org/Courses/Los_Angeles_Harbor_College/Biology_3_Lecture_(Escandon)/08%3A_Patterns_of_Inheritance/8.02%3A_Laws_of_InheritanceThe result is a 1 in 4 (25 percent) probability of both parents contributing a Y, resulting in an offspring with a yellow phenotype; a 25 percent probability of parent A contributing a Y and parent B ...The result is a 1 in 4 (25 percent) probability of both parents contributing a Y, resulting in an offspring with a yellow phenotype; a 25 percent probability of parent A contributing a Y and parent B a y, resulting in offspring with a yellow phenotype; a 25 percent probability of parent A contributing a y and parent B a Y, also resulting in a yellow phenotype; and a (25 percent) probability of both parents contributing a y, resulting in a green phenotype.
- https://bio.libretexts.org/Workbench/Modern_Genetics/01%3A_What_is_a_gene/1.02%3A_Mendelian_Genetics_(Part_I)Mendel's law of segregation. Genotype, phenotype, and alleles. Heterozygous/homozygous. 2 x 2 Punnett squares.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Concepts_in_Biology_(OpenStax)/08%3A_Patterns_of_Inheritance/8.02%3A_Laws_of_InheritanceThe result is a 1 in 4 (25 percent) probability of both parents contributing a Y, resulting in an offspring with a yellow phenotype; a 25 percent probability of parent A contributing a Y and parent B ...The result is a 1 in 4 (25 percent) probability of both parents contributing a Y, resulting in an offspring with a yellow phenotype; a 25 percent probability of parent A contributing a Y and parent B a y, resulting in offspring with a yellow phenotype; a 25 percent probability of parent A contributing a y and parent B a Y, also resulting in a yellow phenotype; and a (25 percent) probability of both parents contributing a y, resulting in a green phenotype.
- https://bio.libretexts.org/Workbench/South_Texas_College_-_Biology_for_Non-Majors/10%3A_Patterns_of_Inheritance/10.02%3A_Laws_of_InheritanceThe result is a 1 in 4 (25 percent) probability of both parents contributing a Y, resulting in an offspring with a yellow phenotype; a 25 percent probability of parent A contributing a Y and parent B ...The result is a 1 in 4 (25 percent) probability of both parents contributing a Y, resulting in an offspring with a yellow phenotype; a 25 percent probability of parent A contributing a Y and parent B a y, resulting in offspring with a yellow phenotype; a 25 percent probability of parent A contributing a y and parent B a Y, also resulting in a yellow phenotype; and a (25 percent) probability of both parents contributing a y, resulting in a green phenotype.
- https://bio.libretexts.org/Courses/Folsom_Lake_College/BIOL_310%3A_General_Biology_(Wada)/06%3A_Genetics/6.01%3A_Patterns_of_Inheritance/6.1.02%3A_Laws_of_InheritanceThe result is a 1 in 4 (25 percent) probability of both parents contributing a Y, resulting in an offspring with a yellow phenotype; a 25 percent probability of parent A contributing a Y and parent B ...The result is a 1 in 4 (25 percent) probability of both parents contributing a Y, resulting in an offspring with a yellow phenotype; a 25 percent probability of parent A contributing a Y and parent B a y, resulting in offspring with a yellow phenotype; a 25 percent probability of parent A contributing a y and parent B a Y, also resulting in a yellow phenotype; and a (25 percent) probability of both parents contributing a y, resulting in a green phenotype.
- https://bio.libretexts.org/Courses/Cosumnes_River_College/Contemporary_Biology_(Aptekar)/06%3A_Patterns_of_Inheritance/6.02%3A_Laws_of_Inheritance-_Dominant_and_Recessive_Inheritance_PatternsThe result is a 1 in 4 (25 percent) probability of both parents contributing a Y, resulting in an offspring with a yellow phenotype; a 25 percent probability of parent A contributing a Y and parent B ...The result is a 1 in 4 (25 percent) probability of both parents contributing a Y, resulting in an offspring with a yellow phenotype; a 25 percent probability of parent A contributing a Y and parent B a y, resulting in offspring with a yellow phenotype; a 25 percent probability of parent A contributing a y and parent B a Y, also resulting in a yellow phenotype; and a (25 percent) probability of both parents contributing a y, resulting in a green phenotype.
- https://bio.libretexts.org/Bookshelves/Genetics/Classical_Genetics_(Khan_Academy)/01%3A_Introduction_to_heredity/1.05%3A_The_law_of_segregationMendel's law of segregation. Genotype, phenotype, and alleles. Heterozygous/homozygous. 2 x 2 Punnett squares.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/Principles_of_Biology/02%3A_Chapter_2/18%3A_Patterns_of_Inheritance/18.03%3A_Phenotypes_and_GenotypesFor a gene that is expressed in a dominant and recessive pattern, homozygous dominant and heterozygous organisms will look identical (that is, they will have different genotypes but the same phenotype...For a gene that is expressed in a dominant and recessive pattern, homozygous dominant and heterozygous organisms will look identical (that is, they will have different genotypes but the same phenotype), and the recessive allele will only be observed in homozygous recessive individuals (Table \PageIndex1).
