Punnett Squares

An organism that has two different alleles for a trait is...

• Purebred/Homozygous

• Hybrid/Heterozygous

• Mixed

• Phenotype

A genetic trait that is represented with a capital letter and will always show if it is present.

• Recessive

• Purebred

• Dominant

• Gene

A trait that is masked by the dominant trait. This type of trait only appears if two recessive alleles for the same characteristic are inherited. It will be represented by a lowercase letter.

• Recessive

• Dominant

• Homozygous

• Allele

Having two identical (the same) alleles of a particular gene or genes.

• Homozygous/Purebred

• Hybrid/Heterozygous

• Traits

• Genotype

An organism's physical appearance due to its genes.

• Genotype

• Genes

• Phenotype

• Allele

Choose ALL examples of HETEROZYGOUS genotypes - there is more than one right answer

• Tt

• tt

• RR

• Hh

• Bb

Choose ALL examples of HOMOZYGOUS genotypes - there is more than one right answer

• TT

• hh

• Rr

• bb

• Hh

Brown eyes are dominant (B). Blue eyes are recessive (b). If 2 siblings' genotypes are (BB) and (Bb), will they have the same eye color (phenotype)?

• Yes, because they have the same genotype

• Yes, because the dominant trait is always expressed

• No, because they have different genotypes

• No, because the recessive trait has to be expressed

Which of the following is homozygous recessive?

• rr
• AA
• TT
• Ff

Which of the following is heterozygous

• FF
• tt
• Gg
• RR