PPT-Gene Mutation Mutation = change(s) in the nucleotide/base sequence of DNA; may occur due

Mutation may result in coding sequences for new amino acids in proteins or not Mutations can occur due to errors during DNA replication replicationdependent mutations Mutations can also occur independently of DNA replication . Updated Summer 2015. by J. D. Hendrix. Mutations: Definitions. Lethal . mutation: results in death of the cell, and therefore cannot be propagated or studied. Conditional mutation: One that is expressed only under certain environmental conditions; for example, a temperature-sensitive mutation. How many genes determine important traits?. Where these genes are located?. How do the genes interact? . What is the role of the environment in the phenotype?. Molecular breeding: Gene discovery, characterization, and selection using molecular tools. SAT VOCABULARY TWO So now we are going to study how DNA can mutate and cause genes to change. People who are deaf cannot hear and their deafness can be genetic. If someone is deaf, no sounds are ________. SAT VOCABULARY TWO So now we are going to study how DNA can mutate and cause genes to change. People who are deaf cannot hear and their deafness can be genetic. If someone is deaf, no sounds are ________. Conditional mutations. Point mutations. In . point mutations . the sequence of the DNA has been altered at a single position. Where this change consists of replacing one nucleotide by another, it is known as a . Can the letters of any word be rearranged to form another word in English? Give examples. . If you rearranged the letters at random, is it likely that you would form another English word? Explain your answer. . Gene alteration – when a change in the genetic code changes the amino acid sequence. Silent mutation- when a change in the genetic code doesn’t change the amino acid sequence. Kinds of mutations. What if it’s NOT just the number?. Gene Mutations. Damaged Chromosomes . –. sometimes a portion of a gene or chromosome is lost or damaged during meiosis. Gene mutation. – a mutation that affects the gene. Mutations. Mutation. : a . change. in DNA. -not all mutations are harmful . -can happen in body cells and in gametes.. . **. mutations are . passed down. to offspring only when they are in the . Rabbani, PhD. Medical Genetics. Variation. Single nucleotide polymorphism. Mutation. Deletion and insertion. Tandem repeats. dbSNP. HapMap. Human . Variome. Project. Chromosomal abnormalities. Locus. If the enzyme that converts tyrosine to melanin is defective, no melanin is produced and a genetic disease known as albinism results.. A peacock with albinism does not produce the melanin needed to make the bright colors of its feathers.. Learning Goal . Identify the type of change in DNA for a point mutation, a deletion mutation, and an insertion mutation. . Genetic Mutation. A. . mutation. is a change in the nucleotide sequence of DNA.. that lead to . different traits . arising.  . These mutations can be passed down genetically and either be . lost. or become . fixed. .  . Since mutation usually affects a single individual in a population, the initial fraction is small and the probability of fixation is thus also small (high probability of loss).  . Warm up . What are the different types of mutations? How are mutations related to evolution?. Place your warm up in the center of the table.. Place your Lab Evidence Packet (with the essay rubric) in the center of the table..