Other Patterns of Inheritance

Color-blindness, resulting from a sex-linked trait, is more common in males than in females because

• the allele for the trait is located on the X chromosome.

• the allele for the trait is located on the Y chromosome.

• males have two copies of an allele for the trait.

• fathers pass the allele to their sons.

Tags

NGSS.HS-LS3-1

Hemophilia is a sex‐linked, recessive trait. Which of the following describes the probability of hemophilia in the offspring of a man who does not have hemophilia and a woman who is a heterozygous carrier?

• There is a 100% chance that their sons will have hemophilia.

• There is a 0% chance that their daughters will have hemophilia.

• There is a 25% chance that their sons will have hemophilia.

• There is a 50% chance that their sons will have hemophilia.

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Alleles for the A and B blood cell antigens are codominant. The condition where no antigens are present on the blood cells (type O blood) is a recessive trait. Which set of parents can most likely produce a child with type O blood?

• one parent with type AB blood, and the other parent with type A blood

• one parent with type AB blood and the other parent with type O blood

• one parent with heterozygous type A blood, and the other parent with type O blood

• one parent with homozygous type A blood, and the other parent with homozygous type B blood

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A human baby boy inherits a recessive allele from his mother. In which circumstance would he most likely show the trait coded for by the recessive allele?

A. The baby inherits the dominant allele from his father.

B. The allele is on an autosomal chromosome and the baby is a twin.

C. The allele is on the X chromosome.

D. The allele is on the Y chromosome.

• The baby inherits the dominant allele from his father.

• The allele is on an autosomal chromosome and the baby is a twin.

• The allele is on the X chromosome.

• The allele is on the Y chromosome.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The Himalayan Chinchilla can be different varieties of colors based on inheriting combinations of the  C allele, C^ch , or C^h allele

• Polygenic Inheritance
• Pleiotropy
• Codominance 
• Multiple Alleles

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

This pattern of inheritance usually results in a normal bell curve of variation in a given population, like the inheritance of height 

• Pleiotropy
• Polygenic Inheritance
• Multiple alleles
• Incomplete Dominance

Tags

NGSS.HS-LS3-3

This pattern of inheritance is demonstrated when a gene from one locus can prevent the full expression of another gene at a different locus. 

• Multiple alleles
• Polygenic Inheritance
• Codominance 
• Epistasis

This pattern of inheritance is when one gene or mutation can have multiple phenotypic effects

• Multiple alleles
• Polygenic inheritance
• Pleiotropy
• Codominance

Which of the following statements is true regarding blood types?

• A and O are codominant, B is recessive.
• B and O are codominant, A is recessive.
• A and B are codominant, O is recessive.
• A , B and O are all codominant with each other.

True or False: Men can NEVER be "carriers" for recessive sex-linked traits because they only have one X chromosome.

• True
• False