Non-Mendelian Genetics

Match the following

• Multiple Alleles

• A trait that is controlled by more than one gene

• Polygenic Inheritance

• A trait that has more than two alleles available per gene

• X-Linked Traits

• A trait in which a third phenotype appears that is a BLEND of the parental phenotypes

• Codominance

• A trait located on the X chromosome

• Incomplete Dominance

• A trait in which a third phenotype appears which INCLUDES both parental phenotypes

Disorder: Colorblindness (X-Linked)

Alleles: B, b

Dominant form of trait: Normal Vision

Recessive form of trait: Person is colorblind

What is the genotype of a female carrier of this disorder? ​ (a)  

• Bb
• BB
• BY
• bY
• bb

Tags

NGSS.HS-LS3-1

Disorder: Colorblindness (X-Linked)

Alleles: B, b

Dominant form of trait: Normal Vision

Recessive form of trait: Person is colorblind

What is the genotype of a colorblind female? ​ (a)  

• bb
• BB
• Bb
• BY
• bY

Tags

NGSS.HS-LS3-1

Disorder: Colorblindness (X-Linked)

Alleles: B, b

Dominant form of trait: Normal Vision

Recessive form of trait: Person is colorblind

What is the genotype of a colorblind male?​ (a)  

• bY
• BB
• Bb
• bb
• BY

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Disorder: Colorblindness (X-Linked)

Alleles: B, b

Dominant form of trait: Normal Vision

Recessive form of trait: Person is colorblind

Fill out the Punnett square showing the cross between a heterozygous female and a colorblind male.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Disorder: Hemophilia (X-Linked)

Alleles: H, h

Dominant form of trait: Normal Blood Clotting

Recessive form of trait: Person has hemophilia

A phenotypically normal woman has phenotypically normal parents. However, she has a hemophilic brother. What are her chances of being a carrier for hemophilia

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

A woman with type B blood has two brothers with type O blood and one sister with type A blood. Determine the genotypes of her siblings and her parents using the Punnett square below

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Snapdragons can be white, red, or pink. Which type of inheritance do snapdragons demonstrate for their color?

• Incomplete Dominance

• Codominance

• Simple Genetics

• Polygenic Alleles

Chickens can be black (BB), white (WW), or checkered (BW). What is the probability that two black chickens having a white offspring.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

How are incomplete dominance and codominance alike? How are they different?

Groups:

(a) Incomplete Dominance

,

(b) Codominance

,

(c) Similarities

• Both alleles are visible in the offspring

• Can lead to variations in phenotypes

• Both alleles are independently expressed

• Both alleles contribute equally to the phenotype

• Both alleles are fully expressed in the phenotype

• Involves the expression of multiple alleles

• Phenotype is a mix of the two parental phenotypes

• Non-Mendelian inheritance patterns

• Pink flowers from red and white parents

• Result in a blending of traits

• Both alleles are present in the genotype

• Both alleles are dominant and expressed together

• Create a third phenotype