Genes and Punnett Squares

What belongs in Box 4?

• Y

• YY

• Yy

• yy

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Look at the punnett square. What is the probability that the offspring would have homozygous alleles for the trait?

• 100%

• 75%

• 50%

• 25%

• 0%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

Both parents in this Punnet square

• are homozygous dominant

• are homozygous recessive

• are heterozygous

• have blue eyes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the probability & phenotype 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

NGSS.HS-LS3-3

Fill in the Yellow Box

• Bb

• BB

• bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What allele combination should go in the missing box?

• AA

• Aa

• aa

• none of these

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

B = brown fur  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

The combination of genes a person has, represented by letters, is their...

• Genotype

• Phenotype

• Chromosome

• Punnett Square

Tags

NGSS.HS-LS3-2

Which of the following allele pairs is heterozygous?

• RR

• Qq

• ss

Tags

NGSS.HS-LS3-2

A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance.  What percentage of the offspring will have pink (RW) flowers?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2