Genetics Quiz

Use the pedigree to answer the following question.

What is the probability of having a homozygous recessive offspring if one parent is homozygous dominant and one parent is homozygous recessive?

• 0%

• 25%

• 50%

• 75%

Joseph created the punnet square below. Which of the following correctly states the offspring probabilities?

• 100% heterozygous

• 50% heterozygous, 50% homozygous dominant

• 50% heterozygous, 50% homozygous recessive

• 75% homozygous dominant, 25% homozygous recessive

Two individuals that are heterozygous for curly hair (H) reproduce. Use the Punnett square to determine the probability that their offspring will express the recessive trait of straight hair (h).

• 0%

• 25%

• 50%

• 75%

The pedigree below shows a two generation family. Based on the information shown in the pedigree, what is the probability of individual II-1 being heterozygous?

• 25%

• 50%

• 75%

• 100%

what is the probability of having a homozygous recessive offspring if one parent is homozygous dominant and one parent is homozygous recessive?

• 0%

• 25%

• 50%

• 75%

An offspring will receive how many alleles from each parent to determine a specific trait?

• one

• two

• three

• four

B=Brown Eyes

b=Blue Eyes

What is true about two brothers that have brown eyes?

One has genotype BB, the other has genotype Bb

• They have different genotypes and phenotypes

• They have the same phenotype but different genotypes

• They have the same genotype but different phenotypes

• 
  I don't know this all too confusing

A parent with Cystic Fibrosis is homozygous recessive (cc), if they have a child with someone who is homozygous dominant (CC), what is the probability their child will have Cystic Fibrosis?

• 0%

• 50%

• 25%

• 100%

G=Dominant Green

g=Recessive yellow

A fish has a Gg genotype. What will its phenotype be?

• Red

• Yellow

• Greenish Yellow

• Green

What is the field of science that studies how traits are passed on or inherited?

• Genetics

• Dominant Traits

• Phenotype

• Mutation