Punnett Squares Practice

A dog with straight fur (Bb) is crossed with a dog with curly fur (bb). What is the probability the offspring will have straight fur?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.MS-LS3-2

In rabbits, black fur is dominant and white fur is recessive. If two white rabbits mate, what is the chance that they will produce an offspring with black fur?

• 0%

• 25%

• 50%

• 75%

• 100%

Tall pea plants are dominant and short pea plants are recessive. A homozygous tall pea plant is crossed with a homozygous short plant. What is the chance that they will produce a tall plant?

• 0%

• 25%

• 50%

• 75%

• 100%

Which of the following best describes the genotype "Rr"?

• recessive

• heterozygous

• purebred

• all of the above

What are the possible genotypes for this cross?

• TT = 25%

  Tt= 50%

  tt=25%

• TT = 75%

  Tt= 25%

• Tt= 50%

  tt=50%

• All tall

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 genotype would go in box 2? And is it Homozygous or Heterozygous?

• BB Heterozygous

• Bb Heterozygous

• bb Homozygous

• Bb Homozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

 In cacti, long arms (A) are dominant to short arms (a).  Suppose 2 heterozygous cacti are crossed.  What percentage of their offspring are expected to have short arms?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.MS-LS4-4

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

Tags

NGSS.HS-LS3-1

In guinea pigs, the allele for short hair is dominant. If all the guinea pigs are born short haired what are the possible genotypes of the parents? (There are two possible combinations.)

• Ss+Ss

• SS+SS

• SS+ss

• SS+Ss