Genetics Vocab

What is an organism's phenotype?

• It's physical appearance
• It represents the genes inside the organism
• Aa
• It's DNA

What is an organism's genotype?

• Homozygous
• It's physical appearance
• A trait that overpowers another
• The two-letter combination of alleles (AA, Aa, or aa)

What is a dominant allele?

• An allele that gets overpowered or covered up unless there are 2 present
• An allele that overpowers any other alleles present
• A two-letter combination
• An organism's physical appearance

What is a recessive allele?

• An allele that gets overpowered or covered up unless there are 2 present
• An allele that overpowers any other alleles present
• A two-letter combination
• An organism's physical appearance

What does homozygous mean?

• Having no alleles
• Having two different alleles
• Having two of the same alleles
• Having 4 alleles

What does heterozygous mean?

• Having no alleles
• Having two different alleles
• Having two of the same alleles
• Having 4 alleles

What does purebred mean?

• Having no alleles
• Having two different alleles
• Having two of the same alleles
• Having 4 alleles

What does hybrid mean?

• Having no alleles
• Having two different alleles
• Having two of the same alleles
• Having 4 alleles

Which of the following represents a homozygous dominant genotype?

• Aa
• AA
• aa
• AaBb

Which of the following represents a heterozygous genotype?

• TT
• tt
• Tt
• TtSs