Genetics Quiz

Brown fur color is dominant over black fur color. Which of the following is the actual genotype of ALL of the offspring in the next generation of this cross for fur color?
AA x aa

• AA

• Aa

• aa

• brown fur

Mike is heterozygous for his green body color while his girlfriend shows the purple, recessive phenotype. What are the possible genotypes of their offspring?

• 100% Green

• 100% Purple

• 75% Green 25% Purple

• 50% Green 50% Purple

In a Punnett Square, what does a heterozygous genotype consist of?

• Two dominant alleles

• Two recessive alleles

• One dominant and one recessive allele

• One allele only

What is the expected phenotypic ratio of a monohybrid cross between two heterozygous parents (Aa x Aa)?

• 1:1

• 3:1

• 9:3:3:1

• 2:1:1

Which of the following is an example of selective breeding?

• A lion and a tiger producing a liger

• Breeding dogs to produce a certain coat color

• A mutation occurring in a wild plant population

• Natural selection leading to the evolution of a species

One problem with selective breeding is

• creating a new species

• gene variety is lost

• extinction of a species

Which is another term for selective breeding?

• Artificial selection
• Natural Selection
• Intelligent selection

Problems with selective breeding include

• Better animals

• Increased meat production

• Animals can have bad health problems

• more diversity

Which is NOT a result of selective breeding?

• Large seedless watermelons that consumer demand

• Bright oranges that are all about the same size

• An insect that matches the color of the environment

• A dog that has been bred to have short hair

Which of the following best represents inbreeding?

• removing DNA from an organism

• changing traits based on environment

• crossing 2 similiar animals

• crossing 2 different animals