Genetics Part 2: Complex Inheritance

This is an example of ___________?

• Incomplete dominance

• Codominance

• Multiple Alleles

• Polygenic Inheritance

This is an example of ___________.

• Incomplete Dominance

• Codominance

• Multiple Alleles

• Polygenic Inheritance

Many genes determine 1 trait (ex: skin color)

• Incomplete Dominance

• Polygenic

• Codominance

• Multiple alleles

For an XX female to express a recessive sex-linked trait, she must have....

• two recessive alleles

• a Y chromosome 

• one recessive allele

• two dominant alleles

Human height occurs in a continuous range because it is affected by the interaction of many genes, making it a(n)

• autosomal trait

• polygenic trait

• codominant trait

• sex-linked trait

Check all that apply.

Human ABO blood type is a _________ trait.

• multiallelic

• polygenic

• codominant

• X-linked

In the following Punnett Square, R represents red scales and B represents blue scales.  If scale type shows co-dominance in fish, what is the probability of each color in the offspring?

• 50% blue, 50% red and blue, 0% red

• 50% purple and 50% blue

• 100% red and blue

• 0% red, 0% blue, 100% red and blue

In the blood type Punnett square shown, what is the probability the offspring will inherit each blood type?

• 50% A, 25% B, 0% AB, 25% O

• 25% A, 50% B, 25% AB, 0% O

• 50% A and 50% B

• 25% AB, 50% A, 25% O

Is it possible for a Type A dad and a Type B mom to have a child with Type O blood?

• Only if both parents are heterozygous

• No

• Only if the Mom is heterozygous

• Only if the Dad is heterozygous

A trait that is carried on the X or Y chromosome is called:

• Polygenic

• Incompletely dominance

• Sex-linked

• Epistatic