Punnett Square Basics Quiz

What is a dominant trait?

• A trait that is always hidden

• A trait that appears even if an organism has only one copy of the gene

What does it mean if a trait is recessive?

• It only shows up if the organism has two copies of the gene

• It is always a bad trait to have

What is a genotype?

• The set of genes in our DNA which is responsible for a particular trait

• The physical appearance of an organism

What is a phenotype?

• The physical appearance or visible traits of an organism

• A type of scientific study about genes

In a Punnett square, what does a capital letter represent?

• A dominant trait

• A phenotype

In a Punnett square, what does a lowercase letter represent?

• A recessive trait

• A genotype

If "R" represents a dominant allele for red flower color and "r" represents a recessive allele for white flower color, what is the phenotype of a plant with the genotype "Rr"?

• White flowers

• Red flowers

What is the probability of having a child with a recessive trait if both parents are dominant and recessive for that trait?

• 100%

• 25%

If a plant has a genotype of "TT", what can we say about its traits?

• It has two recessive alleles

• It has two dominant alleles

What would be the genotype of an organism that is homozygous recessive for a trait?

• AA

• aa