Your SlideShare is downloading. ×
Mutations
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Saving this for later?

Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime - even offline.

Text the download link to your phone

Standard text messaging rates apply

Mutations

98
views

Published on

Published in: Education

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
98
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
2
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. 13.3 Mutations
  • 2. Gene Mutations • Mutation – change in the genetic material of a cell • Point mutations – Changes in one or a few nucleotides – Insertions, deletions, substitutions • Frameshift mutations – Reading frame of the genetic code is shifted – Insertions and deletions are examples
  • 3. Chromosomal Mutations • Change in the number or structure of chromosomes • Can change location of genes on chromosomes, or the number of copies of some genes • Four types are: deletion, duplication, inversion, and translocation (see page 318)
  • 4. Effects of Mutations • Chemical or physical agents in the environment that can alter genetic material • Can help or harm organisms, although most have little or no effect • Chemical mutagens can include: pesticides, tobacco smoke, and pollutants • Physical mutagens can include: x-rays and ultraviolet light
  • 5. Example • Sickle cell anemia (see page 318) –Caused by point mutation –Causes red blood cells to change shape –Sickle-shaped cells interfere with blood flow and can cause severe problems in bloodstream