Incomplete and Co-Dominance. Incomplete Dominance One allele is not completely dominant over the...
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![Page 1: Incomplete and Co-Dominance. Incomplete Dominance One allele is not completely dominant over the other. The heterozygous phenotype is in- between the.](https://reader035.fdocuments.net/reader035/viewer/2022070307/551b03d85503465e7d8b58e5/html5/thumbnails/1.jpg)
Incomplete and Co-Dominance
![Page 2: Incomplete and Co-Dominance. Incomplete Dominance One allele is not completely dominant over the other. The heterozygous phenotype is in- between the.](https://reader035.fdocuments.net/reader035/viewer/2022070307/551b03d85503465e7d8b58e5/html5/thumbnails/2.jpg)
Incomplete Dominance
• One allele is not completely dominant over the other.
• The heterozygous phenotype is in-between the homozygous phenotypes.
![Page 3: Incomplete and Co-Dominance. Incomplete Dominance One allele is not completely dominant over the other. The heterozygous phenotype is in- between the.](https://reader035.fdocuments.net/reader035/viewer/2022070307/551b03d85503465e7d8b58e5/html5/thumbnails/3.jpg)
Incomplete Dominance
If you cross a RED flower with a WHITE flower, you will get a PINK flower.
NOTICE: the RED genotype is RR the WHITE genotype is WW the PINK genotype is RW
![Page 4: Incomplete and Co-Dominance. Incomplete Dominance One allele is not completely dominant over the other. The heterozygous phenotype is in- between the.](https://reader035.fdocuments.net/reader035/viewer/2022070307/551b03d85503465e7d8b58e5/html5/thumbnails/4.jpg)
Let’s Practice!
Cross a BLACK chicken (BB) with a WHITE chicken (WW). These alleles show INCOMPLETE DOMINANCE.
B B
W
W
BW BW
BWBW
What percent is black? White? Gray?
Black: 0%White: 0%Gray: 100%
![Page 5: Incomplete and Co-Dominance. Incomplete Dominance One allele is not completely dominant over the other. The heterozygous phenotype is in- between the.](https://reader035.fdocuments.net/reader035/viewer/2022070307/551b03d85503465e7d8b58e5/html5/thumbnails/5.jpg)
Let’s Practice!
Cross a BLACK chicken (BB) with a WHITE chicken (WW). These alleles show INCOMPLETE DOMINANCE.
B B
W
W
BW BW
BWBW
Genotype: BW
Phenotype: Gray
What is the genotype and phenotype of the F1 generation?
![Page 6: Incomplete and Co-Dominance. Incomplete Dominance One allele is not completely dominant over the other. The heterozygous phenotype is in- between the.](https://reader035.fdocuments.net/reader035/viewer/2022070307/551b03d85503465e7d8b58e5/html5/thumbnails/6.jpg)
Let’s Practice!
What would the cross look like if you crossed two GREY chickens (BW). These alleles show INCOMPLETE
DOMINANCE.B W
B
W
BB BW
WWBW
Genotype: 1 BB 1 WW2 BW
Phenotype: 1 Black 1 White 2 Gray
What is the genotype and phenotype of the F2 generation?
![Page 7: Incomplete and Co-Dominance. Incomplete Dominance One allele is not completely dominant over the other. The heterozygous phenotype is in- between the.](https://reader035.fdocuments.net/reader035/viewer/2022070307/551b03d85503465e7d8b58e5/html5/thumbnails/7.jpg)
Mrs. Smith and Ms. K’s Memory Trick
INcomplete is INbetween
![Page 8: Incomplete and Co-Dominance. Incomplete Dominance One allele is not completely dominant over the other. The heterozygous phenotype is in- between the.](https://reader035.fdocuments.net/reader035/viewer/2022070307/551b03d85503465e7d8b58e5/html5/thumbnails/8.jpg)
Co-Dominance
• Both alleles contribute to the phenotype.
• For Example: In chickens, the allele for black feathers is co-dominant with the allele for white feathers. These chickens will have BOTH black and white feathers.
![Page 9: Incomplete and Co-Dominance. Incomplete Dominance One allele is not completely dominant over the other. The heterozygous phenotype is in- between the.](https://reader035.fdocuments.net/reader035/viewer/2022070307/551b03d85503465e7d8b58e5/html5/thumbnails/9.jpg)
Let’s Practice!
Cross a Black chicken (BB) with a White chicken (WW). These alleles show CO-DOMINANCE.
B B
W
W
BW
BW
BW
BWHow many chickens in the F1 generation are completely black? White?Black and white?
Black: 0%White: 0%Both: 100%
![Page 10: Incomplete and Co-Dominance. Incomplete Dominance One allele is not completely dominant over the other. The heterozygous phenotype is in- between the.](https://reader035.fdocuments.net/reader035/viewer/2022070307/551b03d85503465e7d8b58e5/html5/thumbnails/10.jpg)
Let’s Practice!
Cross a Black chicken (BB) with a White chicken (WW). These alleles show CO-DOMINANCE.
B B
W
W
BW
BW
BW
BWWhat is the genotype and phenotype of the F1 generation?
Genotype: BW
Phenotype: Black and white or checkered.
![Page 11: Incomplete and Co-Dominance. Incomplete Dominance One allele is not completely dominant over the other. The heterozygous phenotype is in- between the.](https://reader035.fdocuments.net/reader035/viewer/2022070307/551b03d85503465e7d8b58e5/html5/thumbnails/11.jpg)
Let’s Practice!
Cross two Black and White (checkered) chickens (BW). These alleles show CO-DOMINANCE.
B W
W
B
WW
BW
BW
BBList all possible genotypes and phenotypes of the F2 generation.
Genotype: 1 BB1 WW2 BW
Phenotype: 1 Black1 White 2 Checkered
![Page 12: Incomplete and Co-Dominance. Incomplete Dominance One allele is not completely dominant over the other. The heterozygous phenotype is in- between the.](https://reader035.fdocuments.net/reader035/viewer/2022070307/551b03d85503465e7d8b58e5/html5/thumbnails/12.jpg)
Mrs. Smith and Ms. K’s Memory Trick
COdominant allelesCOllaborate together
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