1 / 9

genetic change

Science grade 7

hala9
Download Presentation

genetic change

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ScienceExploring the causes of genetic change Grade 7 Hala.galal

  2. Objectives • To obtain and communicate information about the relationship between genes and chromosomes to construct explanations of their relationship to inherited characteristics. 

  3. Deoxyribonucleic acid (DNA) • Made from nucleic acid and holds the code that makes up living things • Chromosome • Tightly coiled strands of DNA found in the cells. All living things have a specific number of chromosomes; humans have 46 chromosomes (23 pairs), and get half from mom and the other half from dad. • Trait • A characteristic belonging to a population or organism. • Gene • Part of a chromosome that is inherited from the parent(s) and determines some of an organism’s characteristics. • Genes are instruction manuals for our bodies • They are the directions for building all proteins • Protein • Made from a chain of amino acids and sometimes referred to as the building blocks of life. Proteins have specific shapes (structure) and perform different tasks (functions) in the body • Amino Acid • Compounds that are the building blocks of proteins

  4. Variation of traits • The differences that occur in the same trait within a population. Variations happen randomly when DNA is passed from parent to offspring and explain why siblings with the same parents do not look exactly alike • Proteins are composed of amino acids there are 20 different amino acids. • Different proteins are made by combining these 20 amino acids in different combinations

  5. Mutation • A change in genetic material (DNA). • What are mutations? • Permanent changes to the genetic information in a cell • Transcription • Phase of protein manufacturing where DNA is copied to mRNA and mRNA leaves the nucleus and travels to the ribosomes • Translation • Phase of protein manufacturing where mRNA and RNA work together to link amino acids together to create proteins What causes mutation? Spontaneous Increases caused by environmental factors UV radiation-x ray

  6. What causes mutation?

  7. 4 types of mutation?

  8. Harmful mutation Neutral mutation Different types of mutation

  9. http://lab.concord.org/embeddable.html#interactives/sam/DNA-to-proteins/4-mutations.jsonhttp://lab.concord.org/embeddable.html#interactives/sam/DNA-to-proteins/4-mutations.json Genes & Mutations Video For Kids | 6th, 7th & 8th Grade ..

More Related