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- https://bio.libretexts.org/Courses/Clinton_College/BIO_300%3A_Introduction_to_Genetics_(Neely)/04%3A_Inheritance/4.04%3A_Exceptions_to_autosomal_inheritanceLoci on sex chromosomes do not adhere to Mendelian patterns of inheritance, because most of the loci on the typical X-chromosome are absent from the Y-chromosome, even though they act as a homologous ...Loci on sex chromosomes do not adhere to Mendelian patterns of inheritance, because most of the loci on the typical X-chromosome are absent from the Y-chromosome, even though they act as a homologous pair during meiosis. Instead, they will follow sex-linked patterns of inheritance.
- https://bio.libretexts.org/Courses/Ohio_State_University/Ohio_State_University_SP22%3A_Molecular_Genetics_4606_(Chamberlin)/20%3A_The_Genetic_Code/20.01%3A_The_Function_of_GenesBecause spores of this particular colony are able to grown only on complete medium (CM), or on miminal medium supplemented with arginine (MM+Arg), they are considered Arg auxotrophs and we infer that ...Because spores of this particular colony are able to grown only on complete medium (CM), or on miminal medium supplemented with arginine (MM+Arg), they are considered Arg auxotrophs and we infer that they have a mutation in a gene in the Arg biosynthetic pathway. Table \(\PageIndex{1}\): Ability of auxotrophic mutants of each of the three enzymes of the Arg biosynthetic pathways to grow on minimal medium (MM) supplemented with Arg or either of its precursors, Orn and Cit.
- https://bio.libretexts.org/Courses/Ohio_State_University/Ohio_State_University_SP22%3A_Molecular_Genetics_4606_(Chamberlin)/10%3A_Nucleic_Acids/10.02%3A__The_Structure_of_DNAThe experiments outlined in the previous sections proved that DNA was the genetic material, but very little was known about its structure at the time.
- https://bio.libretexts.org/Bookshelves/Genetics/Online_Open_Genetics_(Nickle_and_Barrette-Ng)/01%3A_Overview_DNA_and_Genes/1.03%3A__The_Structure_of_DNAThe experiments outlined in the previous sections proved that DNA was the genetic material, but very little was known about its structure at the time.
- https://bio.libretexts.org/Bookshelves/Genetics/Online_Open_Genetics_(Nickle_and_Barrette-Ng)/02%3A_Chromosomes_Mitosis_and_Meiosis/2.01%3A_DNA_is_Packaged_into_ChromatinIf stretched to its full length, the DNA molecule of the largest human chromosome would be 85mm. Yet during mitosis and meiosis, this DNA molecule is compacted into a chromosome approximately 5µm long...If stretched to its full length, the DNA molecule of the largest human chromosome would be 85mm. Yet during mitosis and meiosis, this DNA molecule is compacted into a chromosome approximately 5µm long. Although this compaction makes it easier to transport DNA within a dividing cell, it also makes DNA less accessible for other cellular functions such as DNA synthesis and transcription.
- https://bio.libretexts.org/Bookshelves/Genetics/Online_Open_Genetics_(Nickle_and_Barrette-Ng)/01%3A_Overview_DNA_and_Genes/1.05%3A_The_Function_of_GenesBecause spores of this particular colony are able to grown only on complete medium (CM), or on miminal medium supplemented with arginine (MM+Arg), they are considered Arg auxotrophs and we infer that ...Because spores of this particular colony are able to grown only on complete medium (CM), or on miminal medium supplemented with arginine (MM+Arg), they are considered Arg auxotrophs and we infer that they have a mutation in a gene in the Arg biosynthetic pathway. Table \(\PageIndex{1}\): Ability of auxotrophic mutants of each of the three enzymes of the Arg biosynthetic pathways to grow on minimal medium (MM) supplemented with Arg or either of its precursors, Orn and Cit.
- https://bio.libretexts.org/Bookshelves/Genetics/Online_Open_Genetics_(Nickle_and_Barrette-Ng)/01%3A_Overview_DNA_and_Genes/1.E%3A_Overview_DNA_and_Genes_(Exercises)It includes the study of genes, themselves, how they function, interact, and produce the visible and measurable characteristics we see in individuals and populations of species as they change from one...It includes the study of genes, themselves, how they function, interact, and produce the visible and measurable characteristics we see in individuals and populations of species as they change from one generation to the next, over time, and in different environments. a) What is the relationship between DNA content of a genome, number of genes, gene density, and chromosome number? a) Identify the part of the DNA molecule that would be radioactively labeled in the manner used by Hershey & Chase
- https://bio.libretexts.org/Courses/University_of_Arkansas_Little_Rock/Genetics_BIOL3300_(Leacock)/Genetics_Textbook/04%3A_Inheritance/4.04%3A_Exceptions_to_autosomal_inheritanceLoci on sex chromosomes do not adhere to Mendelian patterns of inheritance, because most of the loci on the typical X-chromosome are absent from the Y-chromosome, even though they act as a homologous ...Loci on sex chromosomes do not adhere to Mendelian patterns of inheritance, because most of the loci on the typical X-chromosome are absent from the Y-chromosome, even though they act as a homologous pair during meiosis. Instead, they will follow sex-linked patterns of inheritance.
- https://bio.libretexts.org/Bookshelves/Genetics/Online_Open_Genetics_(Nickle_and_Barrette-Ng)/01%3A_Overview_DNA_and_Genes/1.04%3A_Genes_are_the_Basic_Units_of_InheritanceThe once prevalent (but now discredited) concept of blending inheritance proposed that some undefined essence, in its entirety, contained all of the heritable information for an individual. It was tho...The once prevalent (but now discredited) concept of blending inheritance proposed that some undefined essence, in its entirety, contained all of the heritable information for an individual. It was thought that mating combined the essences from each parent, much like the mixing of two colors of paint. However, Gregor Mendel (Fig 1.10) was one of the first to take a quantitative, scientific approach to the study of heredity.
- https://bio.libretexts.org/Courses/City_College_of_San_Francisco/Introduction_to_Genetics/04%3A_Mendelian_Genetics/4.E%3A_Genetic_Analysis_of_Single_Genes_(Exercises)Another example of this would be the fairly common observation that in some human families, all of the offspring are either girls, or boys, even though the expected ratio of the sexes is essentially 1...Another example of this would be the fairly common observation that in some human families, all of the offspring are either girls, or boys, even though the expected ratio of the sexes is essentially 1:1. 3.5 If your blood type is B, then your genotype is either I B i or I B I B . If your genotype is I B i, then your parents could be any combination of genotypes, as long as one parent had at least one i allele, and the other parent had at least one I B allele.
- https://bio.libretexts.org/Courses/City_College_of_San_Francisco/Introduction_to_Genetics/04%3A_Mendelian_Genetics/4.15%3A__Phenotypic_Ratios_May_Not_Be_As_ExpectedFor a variety of reasons, the phenotypic ratios observed from real crosses rarely match the exact ratios expected based on a Punnett Square or other prediction techniques. There are many possible expl...For a variety of reasons, the phenotypic ratios observed from real crosses rarely match the exact ratios expected based on a Punnett Square or other prediction techniques. There are many possible explanations for deviations from expected ratios. Sometimes these deviations are due to sampling effects, in other words, the random selection of a non-representative subset of individuals for observation. On the other hand, it may be because certain genotypes have a less than 100% survival rate.
