Punnett Squares

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

• recessive
• dominant
• lower case letter
• both 

B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.

• they have same phenotype and genotype
• they have different genotypes and phenotypes
• they have same phenotype but different genotypes
• they have same genotype but different phenotypes

A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?

• 0%
• 25%
• 50%
• 75%

What is the probability of a purple-horned unicorn if a heterozygous pink-horned unicorn is crossed with a heterozygous pink-horned unicorn?

• 0%
• 25%
• 50%
• 75%

Which of the following genotypes is homozygous dominant?

• Yy

• yY

• yy

• YY

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

incomplete dominance means that there traits are,,,

• expressed equally
• dominant
• recessive
• blended

What is NOT a possible genotype for someone with type B blood?

• I^BI^B

• I^AI^B

• I^Bi

What is the genotype of a person with type A blood, who had a father with type O blood?

• I^AI^B

• I^Ai

• I^AI^A

• ii