Punnett Squares & Pedigrees

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 shown, what belongs in the missing square?

• tt

• Tt

• Bb

• TT

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

B = brown fur and b = white fur

In the Punnett square, what is the probability for white fur?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

How many alleles (letters) do each person carry for a trait?

• 1
• 2
• 3
• 4

Dominant alleles are represented by a _________________.

• Male gene

• lowercase letter

• recessive trait

• capital letter

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 

Complex molecules that carry the genetic information that define an organism's traits. It is stored in the nucleus.

• DNA

• protein

• RNA

• mitochondria

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

How many alleles (letters) does a child get from each parent for each trait?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2