Punnett Squares, Pedigrees, and Complex Genetics Practice

If AA, Aa, aa are the possible genotypes of the offspring in a cross, then what are the parent genotypes?

• Aa and aa

• AA and Aa

• Aa and Aa

• AA and AA

What genotypes are observed when you cross a Dd parent with another Dd parent?

• 75% DD and 25% dd

• 100% DD

• 50% DD and 50% dd

• 25% DD, 50% Dd, 25% dd

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

An allele that produces its characteristic phenotype only when its paired allele is identical is known as a ____________.

• dominant allele

• gene

• recessive allele

Crossing a BB parent with a bb parent results in

• BB, Bb and bb offspring

• half BB and half bb offspring

• all Bb offspring

• B or b offspring

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Heterozygous is when...

• the alleles are the same
• the alleles are different
• the alleles are absent
• the alleles are present

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

• recessive
• dominant
• lower case letter
• both 

T - tall and t = short
In the punnett square below, what belongs in the missing square

• tt
• Tt
• Bb
• TT

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

• 0 %
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

Dominant alleles are represented by a:

• Male gene
• lowercase letter
• recessive trait
• capital letter

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes