Traits
Upcoming SlideShare
Loading in...5
×
 

Traits

on

  • 1,241 views

 

Statistics

Views

Total Views
1,241
Views on SlideShare
1,240
Embed Views
1

Actions

Likes
0
Downloads
21
Comments
0

1 Embed 1

http://verbe1jr.wikispaces.com 1

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Traits Traits Presentation Transcript

  • Traits :Inherited or Learned
  • Genetics Background:Gregor Mendel
    First man to understand genetics
    He studied inheritance in Pea Plants
    Experimented with cross pollination
    Discovered difference between dominant and recessive traits.
    http://en.wikipedia.org/wiki/Gregor_mendel
  • Dominant vs. Recessive
    Dominant trait always appears when present
    Recessive traits can recede in background
    Need two recessive alleles for trait to show
  • Gregor Mendel's Punnett Square
    Dominant Allele
    Recessive Allele
  • Homozygous vs. Heterozygous
    Homozygous = Two same alleles to make up a trait
    Ex. BB, bb
    Heterozygous = Two different alleles
    Ex. Bb
    www.en.wikipedia.org/wiki/genotypes
  • Genes
    Hold info to build / maintain cells
    Pass genetic info to offspring
    Make up a sequence of DNA
    www.en.wikipedia.org/wiki/Gene
  • Allele
    Make up part of a gene
    Make up trait of a organism
    Need two alleles to make up a trait
  • Genotype
    Full heredity information
    Determined fully by DNA
    Usually refers to specific character
    http://en.wikipedia.org/wiki/Genotype-phenotype_distinction
  • Phenotype
    Trait of organism
    Molecular, physical, behavioral
    Determined by genes as well as environment
    Also effected by evolution / natural selection
    Genotype + Environment = Phenotype
    www.wiki.org/wiki/phenotype
  • Natural Selection
    Evolution of an organism
    Change occurs to help organism survive / reproduce
    Changes phenotype not genotype
  • Inherited Traits
    Traits of a person determined by genes
    Not something that can be changed
    Ex. Eye color, skin color
  • Environmental or Acquired Traits
    Things that effect organism that are learned
    Not effected by genes of organism
    Ex. Language a person speaks or accent
  • Build your own Punnett Square
    Fill in the blanks
  • Review
    Which of the following is a example of a Inherited trait?
    Hair color
    Favorite food
    Accent
  • Review
    Fill in the blank
    Genotype + __________ = Phenotype
    Is the allele combination BB or bb an example of homozygous or heterozygous trait?
  • Review
    • Gregor Mendel studied cross-pollination in which type of plant?
    Rose
    Pea plant
    Corn
    • Are traits inherited, learned or a combination of both?