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There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype

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Page 1: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype
Page 2: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype
Page 3: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype

There is no dominant allele, There is no recessive allele.Both alleles “blend” to result in a third phenotype.

Page 4: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype
Page 5: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype
Page 6: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype
Page 7: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype

Traits that are Controlled by Three or More AllelesAn Individual Has a Combination of Two of These

Page 8: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype

Allele A and Allele B are Codominant over Allele O (recessive)

Blood Type Determined by the

Proteins on the Surface of Red Blood Cells

Type A Protein A

Type B Protein B

Type AB Proteins A & B

Type O No Proteins

Page 9: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype

Key

Red: Type A

Blue: Type B

Red/Blue: Type AB

White: Type O

What are the Genotypes of Each Individual?

Page 10: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype

Traits that are Controlled by GenesFound on the X Chromosome but

not the Y Chormosome

Page 11: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype

Sex Linked Recessive Traits In Human Beings

Red Green Colorblindness

Hemophilia

Page 12: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype
Page 13: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype
Page 14: There is no dominant allele, There is no recessive allele. Both alleles “blend” to result in a third phenotype

Multiple Gene (Polygenic) Inheritance

Gametes

 ABC 

 ABc 

 AbC 

 Abc 

 aBC 

 aBc 

 abC 

 abc 

ABC 6 5 5 4 5 4 4 3

ABc 5 4 4 3 4 3 3 2

AbC 5 4 4 3 4 3 3 2

Abc 4 3 3 2 3 2 2 1

aBC 5 4 4 3 4 3 3 2

aBc 4 3 3 2 3 2 2 1

abC 4 3 3 2 3 2 2 1

abc 3 2 2 1 2 1 1 0

Table 1. Polygenic inheritance in people showing a cross between two mulatto parents (AaBbCc x AaBbCc). The

offspring contain seven different shades of skin color based on the number of capital letters in each genotype.


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