Genetics Quiz Practice

The physical expression or characteristics of a genotype (e.g., blue eyes, brown hair) is known as:

• Phenotype

• Genotype

• Codominance

• Incomplete Dominance

Give an example of artificial selection.

• Breeding dogs for specific traits

• Natural evolution of species

• Random mutation in bacteria

• Seasonal migration of birds

What does a heterozygous genotype consist of?

• Two different alleles

• Two identical alleles

• One allele

• Three alleles

Identify if "ff" is a phenotype or a genotype.

• Phenotype

• Genotype

• Neither

• Both

What is the result of crossing two heterozygous organisms?

• All offspring are homozygous dominant

• All offspring are homozygous recessive

• A mix of homozygous and heterozygous offspring

• All offspring are heterozygous

Identify if "ff" is heterozygous, homozygous dominant, or homozygous recessive.

• Heterozygous

• Homozygous dominant

• Homozygous recessive

• None of the above

A situation in which neither allele is completely dominant over the other, resulting in a blended phenotype, is called:

• Incomplete Dominance

• Codominance

• Genotype

• Phenotype

Having two identical alleles for a trait (e.g., AA or aa) is known as:

• Homozygous

• Heterozygous

• Codominance

• Incomplete Dominance

What is the result of crossing a homozygous dominant organism with a heterozygous organism?

• All offspring are homozygous dominant

• All offspring are homozygous recessive

• A mix of homozygous dominant and heterozygous offspring

• All offspring are heterozygous

A situation in which both alleles in a heterozygous organism contribute equally and visibly to the phenotype is known as:

• Codominance

• Incomplete Dominance

• Genotype

• Phenotype