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Genetics

Published on Nov 18, 2015

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PRESENTATION OUTLINE

1.

Genetics

How did I get like this?
Photo by Thomas Hawk
2.

What is an Allele?

  • Quite simply, it is all the options for a trait or gene.
  • Example: the gene is eye color and the alleles are brown, blue, hazel or green
  • Example: the gene is handedness and the alleles are left, right, or both
Photo by *Psyche Delia*
3.

IT'S ONE TRAIT OR ANOTHER

Dominant or recessive
Photo by kyz
4.

Dominant Trait

A trait that appears more often
Photo by andrei.vassiliev
5.

Recessive Trait

A trait that appears less often
Photo by jurvetson
6.

The dominant factor determines the trait that is shown. So....

Photo by kevin dooley
7.

It looks like this

  • Dominant + Dominant= Dominant trait
  • Dominant + Recessive= Dominant traits
  • Recessive + Recessive= Recessive trait
Photo by Axel.Foley
8.

Let's look at

some common dominant and recessive traits
Photo by evilpeacock
9.

Attached vs detached earlobes

10.

The Ears

  • Attached - recessive
  • Detached - dominant
Photo by Menage a Moi
11.

BROWN EYES VS BLUE EYES

Photo by [ALHanouf _ Photography's]
12.

BROWN EYES

Dominant
13.

Widow's peak

14.

Recessive

Photo by kevin dooley
15.

DIMPLES

DOMINANT OR RECESSIVE
Photo by gwilmore
16.

dominant trait

Photo by admiretime
17.

In genetics...

Photo by simmons.kevin4208
18.

Dominant traits are represented

with uppercase letters
Photo by Leo Reynolds
19.

Recessive traits are

represented with lowercase letters
Photo by Stewf
20.

Important Genetic

Words
Photo by net_efekt
21.

GENOTYPE

The organisms make up inside (their genes)
Photo by Hey Paul Studios
22.

Phenotype

The organisms outside appearance
Photo by ROSS HONG KONG
23.

HOMOZYGOUS TRAITS

The genes for a trait are the same (blue eyes/blue eyes
Photo by Neal.
24.

Homozygous Traits are also Purebred

Represented by BB or bb
Photo by Axel.Foley
25.

heteorzygous trait

the genes for the trait are not the same (brown eyes/blue eyes)
Photo by PraveenbenK
26.

Heterozygous Traits are also hybrid

This is represented by Bb
Photo by geishaboy500
27.

A checkerboard type diagram can represent traits

Photo by Michael Fraley
28.

inherited from parents. This representation is called a

Photo by ROSS HONG KONG
29.

Punnett Squares

Link to Video: https://youtu.be/SE1W2AkwxxU
Play Video
30.

LET'S PRACTICE THEM

They're fun
Photo by Kool Cats Photography over 4 Million Views
31.

Untitled Slide

Tammy Hershey