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 Effects and significance of mutations 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 Effects and significance of mutations 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 Effects and significance of mutations