DHS Heredity and Genetics Practice 2 of 2

Traits controlled by two or more genes from different chromosomes

• medelian gene

• monogenic

  trait

• polygenic

  trait

• allele

  trait

Using the partially filled in punnett square what is the genotype that the daughter CANNOT potentially have?

• X^hX^h

• X^HX^h

• X^HX^H

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In humans, cystic fibrosis is a recessive genetic disorder that results in mucus clogging the lungs. If both parents are genetically heterozygous for cystic fibrosis, then what are their chances of having a child who DOES NOT HAVE the disease?  (Hint: draw a Punnett Square on a piece of scratch paper to help you answer the question.)

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In humans, the trait for dimples is dominant over no dimples. If a heterozygous parent is crossed with a homozygous recessive parent, then what is the probability this couple will have offspring with dimples?  (Hint: draw a Punnett Square on a piece of scratch paper to help you answer the question.)

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In a classic Mendelian cross, a homozygous plant that produces purple fruit is crossed with a homozygous plant that produces blue fruit. The seeds of all the offspring are purple. Why?  (Hint: draw a Punnett Square on a piece of scratch paper to help you answer the question.)

• the alleles are expressing incomplete dominance

• the alleles are expressing codominance

• The blue allele is recessive to the dominant purple allele

Albinism (b), is recessive to normal brown coloration (B). When an albino female was crossed with a brown male, they produced 2 offspring that had brown coloring and 2 that were albino. What was the genotype of the male parent?

• BB

• bb

• Bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Looking at the blood donation chart from our Blood Typing Lab, who is considered the "universal donor"?

• A

• B

• AB

• O

Looking at the blood donation chart from our Blood Typing Lab, who is considered the "universal recipient"?

• A

• B

• AB

• O

If a person with O blood type produces offspring with a person heterozygous for A blood, then what percentage of their offspring will be type O?  (HINT: draw a punnett square to help solve the problem)

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Which blood type would not be possible for children of a Type AB mother & a Type B father?  (Hint: draw a Punnett Square on a piece of scratch paper to help you answer the question.)

• A

• B

• AB

• O

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2