Punnett Squares Practice Quiz

Instrukcije

Complete each Punnett square using drag-and-drop or drawing (as instructed). Then answer questions about genotype and phenotype ratios. Use capital letters for dominant alleles and lowercase letters for recessive alleles.

Obavezno

1

What is the expected genotypic ratio of the offspring?

3 Pp : 1 pp

4 Pp

1 PP : 1 Pp : 2 pp

1 Pp : 1 pp

Obavezno

1

Obavezno

2

Match each Punnett square cell to the correct genotype (assume top gametes are P then p, and side gametes are P then p).

Stavka koja se može prevući		Odgovarajuća stavka
Bottom-left cell		PP
Bottom-right cell		Pp
Top-right cell		Pp
Top-left cell		pp

Obavezno

1

Obavezno

1

Obavezno

2

Peas (dihybrid cross)
In peas, tall plants (T) are dominant to short plants (t) and green seeds (G) are dominant to yellow seeds (g).
Cross two dihybrids:
Parents: TtGg × TtGg
Use the template below to complete the 4×4 Punnett square. Then answer the question about the phenotypic ratio.

Obavezno

1

For the dihybrid cross TtGg × TtGg, what is the expected phenotypic ratio (Tall Green : Tall Yellow : Short Green : Short Yellow)?

12 : 4 : 0 : 0

1 : 2 : 1 : 2

3 : 1 : 3 : 1

9 : 3 : 3 : 1

Obavezno

1

In chickens, black (BB) and white (WW) show codominance. What is the expected phenotype of the heterozygote (BW)?

All white feathers

All black feathers

Gray (blended color)

Black-and-white feathers together (speckled/erminette)

Obavezno

2

Match each Punnett square cell to the correct genotype (assume top gametes are R then W, and side gametes are R then W).

Stavka koja se može prevući		Odgovarajuća stavka
Top-right cell		RR
Bottom-left cell		RW
Bottom-right cell		RW
Top-left cell		WW

Obavezno

1

Obavezno

1

Prazan višedijelni

Obavezno

2

3. Peas (dihybrid cross)
In peas, tall plants (T) are dominant to short plants (t) and green seeds (G) are dominant to yellow seeds (g).
Cross two dihybrids: TtGg × TtGg.
Use the Punnett square below and draw/write the genotype in each of the 16 boxes.
Then, on your drawing, also write the phenotypic ratio you expect (tall green : tall yellow : short green : short yellow).

Obavezno

1

4. Chickens (codominance)
In chickens, black (BB) and white (WW) show codominance.
What is the expected phenotype of the heterozygote (BW)?

All black feathers (black is dominant)

Black-and-white feathers (both colors visible)

All white feathers (white is dominant)

Gray feathers (a blend)

Prazan višedijelni

Punnett Squares Practice Quiz

What is the expected genotypic ratio of the offspring?

Match each Punnett square cell to the correct genotype (assume top gametes are P then p, and side gametes are P then p).

Peas (dihybrid cross)
In peas, tall plants (T) are dominant to short plants (t) and green seeds (G) are dominant to yellow seeds (g).
Cross two dihybrids:
Parents: TtGg × TtGg
Use the template below to complete the 4×4 Punnett square. Then answer the question about the phenotypic ratio.

For the dihybrid cross TtGg × TtGg, what is the expected phenotypic ratio (Tall Green : Tall Yellow : Short Green : Short Yellow)?

In chickens, black (BB) and white (WW) show codominance. What is the expected phenotype of the heterozygote (BW)?

Match each Punnett square cell to the correct genotype (assume top gametes are R then W, and side gametes are R then W).

4. Chickens (codominance)
In chickens, black (BB) and white (WW) show codominance.
What is the expected phenotype of the heterozygote (BW)?

What is the expected genotypic ratio of the offspring?

What is the expected phenotypic ratio of the offspring?

Match each Punnett square cell to the correct genotype (assume top gametes are P then p, and side gametes are P then p).

What is the expected genotypic ratio of the offspring?

What is the expected phenotypic ratio of the offspring?

Peas (dihybrid cross)
In peas, tall plants (T) are dominant to short plants (t) and green seeds (G) are dominant to yellow seeds (g).
Cross two dihybrids:
Parents: TtGg × TtGg
Use the template below to complete the 4×4 Punnett square. Then answer the question about the phenotypic ratio.

For the dihybrid cross TtGg × TtGg, what is the expected phenotypic ratio (Tall Green : Tall Yellow : Short Green : Short Yellow)?

In chickens, black (BB) and white (WW) show codominance. What is the expected phenotype of the heterozygote (BW)?

Match each Punnett square cell to the correct genotype (assume top gametes are R then W, and side gametes are R then W).

What is the expected phenotypic ratio of the offspring?

What is the expected genotypic ratio of the offspring?

4. Chickens (codominance)
In chickens, black (BB) and white (WW) show codominance.
What is the expected phenotype of the heterozygote (BW)?

What is the expected phenotypic ratio of the offspring?

What is the expected genotypic ratio of the offspring?

What is the expected phenotypic ratio of the offspring?

What is the expected phenotypic ratio of the offspring?

What is the expected genotypic ratio of the offspring?

Punnett Squares Practice Quiz

Punnett Squares Practice Quiz

What is the expected genotypic ratio of the offspring?

Match each Punnett square cell to the correct genotype (assume top gametes are P then p, and side gametes are P then p).

Peas (dihybrid cross)In peas, tall plants (T) are dominant to short plants (t) and green seeds (G) are dominant to yellow seeds (g).Cross two dihybrids:Parents: TtGg × TtGgUse the template below to complete the 4×4 Punnett square. Then answer the question about the phenotypic ratio.

For the dihybrid cross TtGg × TtGg, what is the expected phenotypic ratio (Tall Green : Tall Yellow : Short Green : Short Yellow)?

In chickens, black (BB) and white (WW) show codominance. What is the expected phenotype of the heterozygote (BW)?

Match each Punnett square cell to the correct genotype (assume top gametes are R then W, and side gametes are R then W).

4. Chickens (codominance)In chickens, black (BB) and white (WW) show codominance.What is the expected phenotype of the heterozygote (BW)?

What is the expected genotypic ratio of the offspring?

What is the expected phenotypic ratio of the offspring?

Match each Punnett square cell to the correct genotype (assume top gametes are P then p, and side gametes are P then p).

What is the expected genotypic ratio of the offspring?

What is the expected phenotypic ratio of the offspring?

Peas (dihybrid cross)In peas, tall plants (T) are dominant to short plants (t) and green seeds (G) are dominant to yellow seeds (g).Cross two dihybrids:Parents: TtGg × TtGgUse the template below to complete the 4×4 Punnett square. Then answer the question about the phenotypic ratio.

For the dihybrid cross TtGg × TtGg, what is the expected phenotypic ratio (Tall Green : Tall Yellow : Short Green : Short Yellow)?

In chickens, black (BB) and white (WW) show codominance. What is the expected phenotype of the heterozygote (BW)?

Match each Punnett square cell to the correct genotype (assume top gametes are R then W, and side gametes are R then W).

What is the expected phenotypic ratio of the offspring?

What is the expected genotypic ratio of the offspring?

4. Chickens (codominance)In chickens, black (BB) and white (WW) show codominance.What is the expected phenotype of the heterozygote (BW)?

What is the expected phenotypic ratio of the offspring?

What is the expected genotypic ratio of the offspring?

What is the expected phenotypic ratio of the offspring?

What is the expected phenotypic ratio of the offspring?

What is the expected genotypic ratio of the offspring?

Peas (dihybrid cross)
In peas, tall plants (T) are dominant to short plants (t) and green seeds (G) are dominant to yellow seeds (g).
Cross two dihybrids:
Parents: TtGg × TtGg
Use the template below to complete the 4×4 Punnett square. Then answer the question about the phenotypic ratio.

4. Chickens (codominance)
In chickens, black (BB) and white (WW) show codominance.
What is the expected phenotype of the heterozygote (BW)?

Peas (dihybrid cross)
In peas, tall plants (T) are dominant to short plants (t) and green seeds (G) are dominant to yellow seeds (g).
Cross two dihybrids:
Parents: TtGg × TtGg
Use the template below to complete the 4×4 Punnett square. Then answer the question about the phenotypic ratio.

4. Chickens (codominance)
In chickens, black (BB) and white (WW) show codominance.
What is the expected phenotype of the heterozygote (BW)?