animal genetics: animal genetics: dominant vs. recessive traits intro to agriculture science
DESCRIPTION
What do we already know? review…TRANSCRIPT
![Page 1: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/1.jpg)
Animal Genetics:Animal Genetics:Dominant vs.
Recessive Traits
Intro to Agriculture Science
![Page 2: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/2.jpg)
GOALS:GOALS:Explain the difference between
dominant and recessive genes.
Use a Punnett Square to predict genotypic and phenotypic ratios of offspring.
![Page 3: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/3.jpg)
What do we What do we alreadyalready know? know?review…
![Page 4: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/4.jpg)
PhenotypePhenotypeAppearance! Result of GenotypeExample:
Bw = Black Coat
Because
B is dominant
![Page 5: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/5.jpg)
GenotypeGenotypeThe genetic makeup! Alleles from parentsWhat you can’t see
Example:
Alleles that code for good milk production.
![Page 6: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/6.jpg)
AllelesAllelesA pair of genesThat code for the same trait
Example:
Hair ColorEye Color
Height
![Page 7: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/7.jpg)
What do we What do we need toneed to know?know?
vocabulary…
![Page 8: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/8.jpg)
Dominant GenesDominant GenesDetermine what the offspring will
look like!Expressed as capital lettersMask recessive genes.Example:
B=Black w=White
Dominant Allele = B
![Page 9: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/9.jpg)
Recessive GenesRecessive GenesSometimes determine what the
offspring will look like.Expressed as lowercase letters
Example:B=Black w=White
Recessive allele = w
![Page 10: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/10.jpg)
What is it called What is it called when both when both allelesalleles are the are the
same?same?
Homozygous
![Page 11: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/11.jpg)
ExampleExample
AA or aa
![Page 12: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/12.jpg)
Identify... Dominant & Identify... Dominant & RecessiveRecessive
AA or aa
? ?
![Page 13: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/13.jpg)
AA or aa
Homozygous
Dominant
Homozygous
Recessive
![Page 14: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/14.jpg)
What is it called What is it called when both when both allelesalleles are are
different?different?
Heterozygous
![Page 15: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/15.jpg)
ExampleExample
Aa
![Page 16: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/16.jpg)
Lets Get to It!
GeneticGeneticCrossesCrosses
MonohybriMonohybrid Crossesd Crosses
Punnett Punnett SquaresSquaresGeneticGenetic
CrossesCrosses
Punnett Punnett SquaresSquares
MonohybriMonohybrid Crossesd Crosses
![Page 17: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/17.jpg)
What the What the heckheck are they? are they?Punnett squares are genetic crosses
used by biologists to predict the probability that certain traits will be inherited by offspring.
![Page 18: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/18.jpg)
What do they What do they looklook like? like? Punnett Square:
![Page 19: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/19.jpg)
MONOHYBRID CROSSMONOHYBRID CROSS
A Punnett Square
Using one pair of contrasting traits
Ex: hair color
![Page 20: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/20.jpg)
Example #1:Example #1:Homozygous vs. Homozygous
![Page 21: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/21.jpg)
Example #1:Example #1:
A White Sow (ww)
crossed with
A Black Boar (BB)
![Page 22: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/22.jpg)
B
B(BB)
w w
(ww)
Bw Bw
Bw Bw
Homozygous vs. Homozygous
![Page 23: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/23.jpg)
Example #2:Example #2:Homozygous vs. Heterozygous
![Page 24: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/24.jpg)
Example #2:Example #2:
A White Sow (ww)
crossed with
A Black Boar (Bw)
![Page 25: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/25.jpg)
B
w(Bw)
w w
(ww)
Bw Bw
ww ww
Homozygous vs. Heterozygous
![Page 26: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/26.jpg)
Example #3:Example #3:Heterozygous vs. Heterozygous
![Page 27: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/27.jpg)
B
w(Bw)
B w
(Bw)
BB Bw
Bw ww
Heterozygous vs. Heterozygous
![Page 28: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/28.jpg)
Result…Result…
![Page 29: Animal Genetics: Animal Genetics: Dominant vs. Recessive Traits Intro to Agriculture Science](https://reader034.vdocuments.mx/reader034/viewer/2022051123/5a4d1b3c7f8b9ab05999f0a2/html5/thumbnails/29.jpg)
Try it!Try it!cfu…