https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:inheritance-and-variation/x0c5bb03129646fd6:mutations/v/mutations 2022-09-10T03:04:58.582913383Z Mutations Changes (mutations) to genes can result in changes to proteins, which can affect the structures and functions of the organism and thereby change traits. Some changes are beneficial, others harmful, and some neutral to the organism. Sal Khan video https://cdn.kastatic.org/ka_thumbnails_cache/dcbba93c-f3ef-4c61-bf4b-ace23377cc44_1280_720_base.png Mutations Changes (mutations) to genes can result in changes to proteins, which can affect the structures and functions of the organism and thereby change traits. Some changes are beneficial, others harmful, and some neutral to the organism. https://cdn.kastatic.org/ka-youtube-converted/_9wnC5pta78.mp4/_9wnC5pta78.mp4 181 Mutations and chromosomal disorders https://www.khanacademy.org/science/10th-grade-melcs/x1cfbe2e54160ac98:3rd-quarter/x1cfbe2e54160ac98:heredity/v/the-causes-of-genetic-mutations 2023-08-14T21:12:46.061619254Z The causes of genetic mutations Explore the causes of genetic mutations, diving into the world of point and frame-shift mutations. Understand how base substitutions, like transitions and transversions, lead to point mutations. Discover how insertions and deletions can cause frame-shift mutations. Finally, get a glimpse of large-scale mutations, such as translocation and inversion. Ross Firestone video https://cdn.kastatic.org/googleusercontent/xziL2mL2GtnjMs1VIIPcy_oNfE23jJCCKxM5qDX3TFVTukEFepk2gUlLayoURqO70MHT5Uk2kF_oOe7lGcfsJes The causes of genetic mutations Explore the causes of genetic mutations, diving into the world of point and frame-shift mutations. Understand how base substitutions, like transitions and transversions, lead to point mutations. Discover how insertions and deletions can cause frame-shift mutations. Finally, get a glimpse of large-scale mutations, such as translocation and inversion. https://cdn.kastatic.org/ka-youtube-converted/rtUoWyIE1FM.mp4/rtUoWyIE1FM.mp4 314 Mutations and chromosomal disorders https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/mutations-ap/v/an-introduction-to-genetic-mutations 2023-06-22T09:32:02.370557018Z An introduction to genetic mutations Genetic mutations originate at the DNA level, affecting protein synthesis. Mutations can be inherited from parents or occur spontaneously due to factors like replication errors or environmental influences. Sickle-cell disease exemplifies how a single amino acid change can impact protein function, leading to health complications. Ross Firestone video https://cdn.kastatic.org/googleusercontent/GhAXcDMBCN8n274CPkYeoNSrlJopiu61uyDdt3VywdUQGF852hdydzd3GwFHVzXAUhEKj5bnNoXTArtFcEqlnmuN An introduction to genetic mutations Genetic mutations originate at the DNA level, affecting protein synthesis. Mutations can be inherited from parents or occur spontaneously due to factors like replication errors or environmental influences. Sickle-cell disease exemplifies how a single amino acid change can impact protein function, leading to health complications. https://cdn.kastatic.org/ka-youtube-converted/g02RnGXCXrQ.mp4/g02RnGXCXrQ.mp4 324 Mutations and chromosomal disorders https://www.khanacademy.org/science/10th-grade-melcs/x1cfbe2e54160ac98:3rd-quarter/x1cfbe2e54160ac98:heredity/e/genetic-mutations-questions 2024-09-12T15:08:00.241001339Z Genetic mutations questions Genetic mutations questions Bradley Kolb exercise https://www.khanacademy.org/science/grade-11-biology-snc-aligned/x58c107ba92d3f0b2:domain-h-reproduction-and-inheritance/x58c107ba92d3f0b2:mutations-and-chromosomal-disorders/v/the-different-types-of-mutations 2022-11-16T04:22:43.7414897Z The different types of mutations There are different types of genetic mutations that can occur in a cell. Point mutations involve the replacement of one base with another.Frame-shift mutations occur when a base is added or removed from the sequence. Non-sense mutations create a stop codon, which can prevent the protein from being produced entirely, while missense mutations result in the substitution of one amino acid for another. Ross Firestone video https://cdn.kastatic.org/googleusercontent/7sVZJpC1SqIzlGDuZHoP4cnlokDWtrYYsEeUTkx2yhA39Guzppta-9uSpEGtUwnBFFFLilFEswdkomSJ-GtVXwvaCg The different types of mutations There are different types of genetic mutations that can occur in a cell. Point mutations involve the replacement of one base with another.Frame-shift mutations occur when a base is added or removed from the sequence. Non-sense mutations create a stop codon, which can prevent the protein from being produced entirely, while missense mutations result in the substitution of one amino acid for another. https://cdn.kastatic.org/ka-youtube-converted/xYOK-yzUWSI.mp4/xYOK-yzUWSI.mp4 352 Mutations and chromosomal disorders https://www.khanacademy.org/science/10th-grade-melcs/x1cfbe2e54160ac98:3rd-quarter/x1cfbe2e54160ac98:heredity/a/types-of-mutations-and-their-notations 2024-09-13T19:15:03.436689889Z Types of mutations and their notations This article reviews different types of mutations and how they may be presented in shorthand form. article https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/mutations-ap/v/mutagens-and-carcinogens 2023-05-30T20:02:27.999489372Z Mutagens and carcinogens Mutagens and carcinogens can cause DNA damage, affecting protein production. Mutagens, either endogenous or exogenous, increase genetic mutation probability. Endogenous mutagens, like reactive oxygen species (ROS), are produced by the body. Exogenous mutagens include intercalators and base analogs. Carcinogens lead to cancer, and while some are mutagenic, not all are. Examples include tobacco, asbestos, and UV radiation. Ross Firestone video https://cdn.kastatic.org/googleusercontent/nosyvQND9TRLy8G35DTDol8-fkuwzmmi5iffwGiClT2TgZTOecbnmlcpGBSqxzKFZ39GTMCII9U-k9si0O45dFE Mutagens and carcinogens Mutagens and carcinogens can cause DNA damage, affecting protein production. Mutagens, either endogenous or exogenous, increase genetic mutation probability. Endogenous mutagens, like reactive oxygen species (ROS), are produced by the body. Exogenous mutagens include intercalators and base analogs. Carcinogens lead to cancer, and while some are mutagenic, not all are. Examples include tobacco, asbestos, and UV radiation. https://cdn.kastatic.org/ka-youtube-converted/4mrp5uI9anE.mp4/4mrp5uI9anE.mp4 337 Mutations and chromosomal disorders https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:inheritance-and-variation/x0c5bb03129646fd6:mutations/e/apply-mutations 2026-02-27T20:00:43.673916617Z Apply: mutations Apply your understanding of mutations in this set of free practice questions aligned to NGSS standards. Khan Academy exercise https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:inheritance-and-variation/x0c5bb03129646fd6:mutations/a/mutations 2024-06-28T21:00:15.59562973Z Mutations Learn about beneficial, neutral, and harmful genetic mutations. article https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/mutations-ap/v/the-effects-of-mutations 2023-06-22T15:57:36.106541556Z The effects of mutations Mutations in DNA can lead to abnormal protein production, affecting organisms in various ways. These genetic changes can be advantageous, deleterious, or neutral, depending on factors like the environment. Examples include antibiotic-resistant bacteria, cystic fibrosis, and sickle-cell disease, which demonstrate the complex nature of mutations and their impact on living beings. Ross Firestone video https://cdn.kastatic.org/googleusercontent/PNKtvYQeM-OUMo_08_sn5LiIxe_hZc53afGxNxLsQq-MBqg129_Zzqu95Oe3gvWCmAb8xTitQ-jo0xoMTa4hbKmR The effects of mutations Mutations in DNA can lead to abnormal protein production, affecting organisms in various ways. These genetic changes can be advantageous, deleterious, or neutral, depending on factors like the environment. Examples include antibiotic-resistant bacteria, cystic fibrosis, and sickle-cell disease, which demonstrate the complex nature of mutations and their impact on living beings. https://cdn.kastatic.org/ka-youtube-converted/JxC2phkdY8Y.mp4/JxC2phkdY8Y.mp4 251 Mutations and chromosomal disorders https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/mutations-ap/e/mutations 2025-10-30T11:07:58.965358241Z Mutations Test your knowledge of mutations! exercise https://www.khanacademy.org/science/ap-biology/ecology-ap/disruptions-to-ecosystems/v/mutation-as-a-source-of-variation 2024-07-01T12:21:22.678114321Z Mutation as a source of variation Natural selection relies on variation in populations, driving evolution. Variation arises from sexual reproduction, shuffling gene combinations, and mutations, creating new alleles or genes. Phenotypes, observable traits, stem from genotypes, genetic information. Mutations can be neutral, advantageous, or detrimental, influencing the survival and reproduction of an organism. Sal Khan video https://cdn.kastatic.org/googleusercontent/PYpF6-9WqdwLioZQc3w8XH-davH1bcwmr8v6wEbQI4TRcvZJ4yzS3S2KMaFOA6_9lcvOFFiC0iG8lO1VcD6Kn9Jo Mutation as a source of variation Natural selection relies on variation in populations, driving evolution. Variation arises from sexual reproduction, shuffling gene combinations, and mutations, creating new alleles or genes. Phenotypes, observable traits, stem from genotypes, genetic information. Mutations can be neutral, advantageous, or detrimental, influencing the survival and reproduction of an organism. https://cdn.kastatic.org/ka-youtube-converted/LZCE-4q5f9c.mp4/LZCE-4q5f9c.mp4 366 Mutations and chromosomal disorders https://www.khanacademy.org/science/ap-biology/heredity/chromosomal-inheritance-ap/a/aneuploidy-and-chromosomal-rearrangements 2025-11-24T21:00:40.80360556Z Aneuploidy & chromosomal rearrangements Aneuploidy and nondisjunction. Down syndrome and related disorders. Chromosomal rearrangements. article https://www.khanacademy.org/science/grade-11-biology-snc-aligned/x58c107ba92d3f0b2:domain-h-reproduction-and-inheritance/x58c107ba92d3f0b2:mutations-and-chromosomal-disorders/a/stem-cells 2024-09-19T15:25:01.460923896Z Stem cells This article goes over stem cells and their applications in DNA technology. article