1 / 11

Biotechnology Bell Ringers for October 1 st , 2010

Biotechnology Bell Ringers for October 1 st , 2010. Genes are a powerful influences on physical and mental characteristics. Name an example of these influences in people. What are the two categories of genes passed from parent to offspring?

yoland
Download Presentation

Biotechnology Bell Ringers for October 1 st , 2010

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. Biotechnology Bell Ringers for October 1st, 2010 • Genes are a powerful influences on physical and mental characteristics. Name an example of these influences in people. • What are the two categories of genes passed from parent to offspring? • Is the mutation for an animal to have the albino gene a disadvantage or an advantage? Why?

  2. Biotechnology Objectives forOctober 1st, 2010 (4.03) • Progress Reports • Continue our study of DNA by analyzing the Human Genome • Construct and analyze a model of DNA • Time permitting, Biotechnology current events

  3. What is a Genome? • A genome is an organism’s complete set of DNA • Except for mature red blood cells, all human cells contain a complete genome

  4. Genome Science • DNA in the human genome is arranged into 24 distinct chromosomes • A few types of major chromosomal abnormalities can be detected by microscopic examination • Most changes in DNA are subtle and require a closer analysis of the DNA molecule

  5. Genome Science • Each chromosome contains many genes, the basic physical and functional units of heredity • Genes are specific sequences of bases that encode instructions on how to make proteins

  6. Genome Science • Genes comprise only about 2% of the human genome • The human genome is estimated to contain 30,000 to 40,000 genes

  7. Genome Science • Although genes get a lot of attention, it’s the proteins that perform most life functions • Proteins are large, complex molecules made up of smaller subunits called amino acids

  8. Genome Science • Genomes are "brought to life" by being "expressed" according to a complex set of directions embedded in the DNA • The products of expression are proteins that do essentially all the work of the cell

  9. Genome Science • Proteins typically work together with other proteins or nucleic acids as multicomponent "molecular machines" -- structures that fit together and function in highly specific, lock-and-key ways

  10. Genome Science • DNA contains a phosphate group that attaches to base pairs • The four base pairs of DNA are: • Adenine (A) • Thymine (T) • Guanine (G) • Cytosine (C)

  11. Building a DNA Structure • Two Red twizzlers represent the phosphate bases • The colored twizzlers represent the four bases of DNA • Adenine (A) : Blue • Thymine (T) : Green • Guanine (G) : Yellow • Cytosine (C) : Orange • Remember, A can only attach to T and G can only attach to C (Blue can only attach to Green and Yellow can only attach to Orange) • Once we make our DNA model, we will attach them all together as a class

More Related