Punnett Square Practice

In pea plants, Tall plants(T) are dominant to short (t) plants. Complete a cross between a Tall true-breeding plant and a short plant​ ​

(**hint- true breeding = homozygous= purebred)

​

In pea plants, Tall plants(T) are dominant to short (t) plants. In a cross between a true-breeding Tall plant and a Short plant, what is the expected F1 Phenotype (F1= first generation)

• 50% Tall, 50% Short

• 100% Tall

• 100% Short

• 25% short, 75% Tall

Complete the Cross

P: Dd X DD

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

One parent is Heterozygous for a certain trait (Dd). The other parent is Homozygous Dominant for that trait (DD). What is the percent chance that an offspring from this cross will be heterozygous?

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Red flower color (R) is dominant to white flower color (r) in rose plants. Complete a cross between two heterozygous rose plants

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Red flower color is dominant to white flower color in rose plants. What is the expected Phenotype of a cross between two heterozygous rose plants?

• 100% red

• 100% White

• 50% Red

  50% White

• 75% Red

  25% White

Tags

NGSS.MS-LS3-2

Red Flower Color (R) is dominant to white (r) in Rose Plants. What Genotype ratio best describes the F1 Generation in a cross between 2 Heterozygous Parents?

• 1:2:1

• 2:4

• 3:4

• 2:4

In rats Black Fur is dominant to white fur. Identify the Parents that would result in a 1:2:1 Genotype ratio

• P: BB x bb

• P: Bb xbb

• bb x bb

• Bb x Bb

Identify the Following Genotypes as either Hybrid or Purebred

Groups:

(a) Hybrid

,

(b) Purebred

• Mm

• Rr

• TT

• BB

• bb

• Gg

Indicate whether the given Genotypes would result in a Dominant or Recessive Phenotype : TT

Groups:

(a) Dominant

,

(b) Recessive

• TT

• gg

• bb

• Bb

• Gg

• tt

Tags

NGSS.HS-LS3-1