Punnett Square

What are the possible phenotype(s) of the offspring? (A-Brown hair; a-blond hair)

• 50 % Brown Hair and 50% Blond Hair

• 25 % Brown Hair and 75% Blond Hair

• 75 % Brown Hair and 25% Blond Hair

• 0% Brown Hair and 100% Blond Hair

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the expected genotype RATIO of the offspring? (A-Brown hair; a-blond hair)

• 1:1 (Aa:aa)

• 2:1 (AA:aa)

• 1:2:1 (AA:Aa:aa)

• 3:1 (AA:Aa)

Tags

NGSS.HS-LS3-3

If two heterozygous individuals are crossed, what is the probability of having a homozygous recessive offspring? (A-Brown hair; a-blond hair)

• 25%

• 50%

• 0%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Which of the following represents a heterozygous genotype? (A-Brown hair; a-blond hair)

• aa

• Aa

• AA

• None of the above

Tags

NGSS.HS-LS3-2

If green is dominant over purple (G) and purple is recessive (g) then what is the genotype for this individual?

• Purple
• Green
• GG
• gg

Tags

NGSS.HS-LS3-1

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

• recessive
• dominant
• lower case

• weaker 

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

G = green, g = yellow
The genotype for a yellow plant is...

• GG
• Gg
• gg
• g

Tags

NGSS.HS-LS3-2

B = brown fur  b = white fur
If two heterozygous parents reproduce, what is the probability that the offspring will have white fur?

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-3

Which of the following genotypes is homozygous recessive?

• Tt
• tt
• TT
• t