1 / 5

Chapter 27 Human Genetics

Chapter 27 Human Genetics. Chapter 27.1 Notes. 3 things about chromosomes Humans have 46 chromosomes in all body cells . Humans have 23 chromosomes in all sex cells (sperm or egg). Different organisms have different #’s of chromosomes.

carol
Download Presentation

Chapter 27 Human Genetics

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. Chapter 27 Human Genetics

  2. Chapter 27.1 Notes 3 things about chromosomes • Humans have 46 chromosomes in all body cells. • Humans have 23 chromosomes in all sex cells (sperm or egg). • Different organisms have different #’s of chromosomes.

  3. Amniocentesis is a way of looking at the chromosomes of a fetus. • 23rd pair of chromosomes determine sex (male/female) they are called sex chromosomes. Female= XX and Male= XY • Autosomes are chromosomes that do NOT determine sex (1-22nd pairs)

  4. Amniocentesis Human Karyotype Autosomes pairs 1-22 Sex cells the last pair (23)

  5. Work Cited • “amniocentesis”. April 30, 2007. http://health.yahoo.com/media/mayoclinic/images/image_popup/pr7_amnio.jpg • “Karyotype”. April 30, 2007. http://www.laskerfoundation.org/rprimers/gnn/wagn/images/karyotype.gif • “Purple Karyotype”. April 30, 2007. http://fairmanstudios.com/images/human_genetics.jpg

More Related