aim how do organisms inherit genetic information from their parents
Download
Skip this Video
Download Presentation
AIM: How do organisms inherit genetic information from their parents?

Loading in 2 Seconds...

play fullscreen
1 / 11

AIM: How do organisms inherit genetic information from their parents? - PowerPoint PPT Presentation


  • 106 Views
  • Uploaded on

AIM: How do organisms inherit genetic information from their parents?. 4/16/13 DO NOW: 1. Pick up today’s quiz. HOMEWORK: ILS Review Book Read p. 23-25 Answer Questions #1-19 on p. 27-33 in your review book. DUE- Tomorrow. What are genes? Contains hereditary information

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' AIM: How do organisms inherit genetic information from their parents?' - renee


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
aim how do organisms inherit genetic information from their parents
AIM: How do organisms inherit genetic information from their parents?

4/16/13

DO NOW:

1. Pick up today’s quiz

HOMEWORK:

ILS Review Book

  • Read p. 23-25
  • Answer Questions #1-19 on p. 27-33 in your review book.

DUE- Tomorrow

slide2

What are genes?

  • Contains hereditary information
  • Composed of DNA

What determines your traits?

  • One or many pairs of your genes.

Where do you inherit you traits from?

  • Mom & Dad
slide3

How does sexual reproduction differ from asexual reproduction?

  • Sexual – Combination of genes (traits) from sperm & egg.
  • Asexual – exact copy of the genes (traits) from the parent cell.
slide4

What is a dominant trait?

  • A trait that hides (overshadows) the affect of another

What is a recessive trait?

  • A trait whose affect may be hidden by a dominant trait.

How do geneticists indicate whether a trait is dominant or recessive?

  • Dominant = Capital Letter “G”
  • Recessive = Lowercase letter “g”
slide5

How do geneticists represent the genes for a particular trait?

  • Genotype: GG, Gg, gg
  • One gene from mom & one from dad

How do homozygous genes differ from heterozygous genes?

  • Homozygous = Pure (GG, gg)
  • Heterozygous = Hybrid (Gg)
slide6

What is phenotype?

  • The observable trait as a result of the gene combination

What are the phenotype of the following?

G= Green pods

g= Yellow pods

GG =

Green pods

Gg =

Green pods

gg=

Yellow pods

slide7

How can we predict the probability of a trait being expressed?

  • Punnett squares
  • Pedigree charts

According to the punnett square at left, what is the probability of Green Pods? Yellow Pods?

  • Green = 3/4 or 75%
  • Yellow = 1/4 or 25%
slide8

A Punnett square is shown at right. The dominant trait is represented by R. The recessive trait is represented by r.

What percentage of the offspring will most likely show the dominant trait?

75% Dominant

25% Recessive

slide10

What is the probability of offspring with the tongue roller trait? Mom = Rr Dad= rr

Mom = Rr

Dad = Rr

slide11

How are males represented in a pedigree chart?

  • Males = Squares

How are females represented in a pedigree chart?

  • Females = circles

How can you determine the offspring from a couple?

ad