Alleles Quiz

What is an allele?

• DNA

• A different version of the same gene

• A chromosome

• A disease

Alleles cause which kind of variation?

• Genetic

• Environmental

What is a dominant allele?

• A big allele

• One that causes you to be taller

• An allele that is shown even when there is only 1 present

• An allele that is only shown when there are 2 present

What is a genotype?

• Another name for DNA

• Your genetic make-up

• A DNA test used in forensics

What is a recessive allele?

• A big allele

• One that causes you to be taller

• An allele that is shown even when there is only 1 present

• An allele that is only shown when there are 2 present

What is a phenotype?

• How an organism looks

• The genotype

• A chemical

• Another word for variation

A pair of alleles is heterozygous if they are....

• The same

• Different

Recessive alleles are only shown when in a homozygous pair. True or False?

• True

• False

A pair of alleles are homozygous if they are....

• The same

• Different

Dominant alleles are only shown when in a homozygous pair. True or False?

• True

• False