CN7 Mutations.pdf

Name: Score: Grade & Section: Date: Teacher: Isaiah Shakaina T. Simms Subject: Biology 10 Type of Activity (Please check th...

Name: Score: Grade & Section: Date: Teacher: Isaiah Shakaina T. Simms Subject: Biology 10 Type of Activity (Please check the appropriate line.) / Concept Notes / Individual Formative Laboratory Pair/Group Summative/PT Lesson/ Topic: Mutations Learning Target/s: Differentiate between mutation and mutagens Reference/s: Mutations (NHGRI, 2024) A mutation is a change in the DNA sequence of an organism. Mutations can result from errors in DNA replication during cell division, exposure to mutagens, or a viral infection. Common cases of mutation include: Types of Mutation Definition Deletion - a segment of DNA is lost or removed; this can happen at various lengths, from a single nucleotide to a large portion of a chromosome Duplication - a segment of DNA is repeated; this can happen once (tandem duplication) or multiple times (amplification) Inversion - a segment of DNA is reversed; this means the order of the nucleotides within the segment is flipped Insertion - a segment of DNA is added or inserted into another segment; this can happen at various lengths, from a single nucleotide to a large portion of a chromosome Translocation - a segment of DNA is moved from one chromosome to another; this can happen between homologous chromosomes or non-homologous chromosomes Mutagens are substances in the environment that can cause mutations. Insecticides, pesticides, compounds from cigarette smoke, and chemical wastes of factories are sources of mutagens. Radiation can also increase the rate of mutation. Television, computer screens, nuclear plants, and some rocks that give off radiation are capable of inducing changes in DNA. COMPREHENSION CHECK: (Copy and answer) What is the difference between mutation and mutagen? Header: _____/ 1 Content: _____/ 2 Comprehension Check Answer: _____/ 2 Page Number: ____