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https://learn.genetics.utah.edu/content/pigeons/pigeonetics/

 Follow the directions in the interactive website about pigeon genetics and fill out the questions in the worksheet 

© 2014 University of Utah

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Pigeon Genetics Student Worksheet

Pigeon Genetics – Student Worksheet 1

Learn.Genetics.utah.edu GENETIC SCIENCE LEARNING CENTER

Probability of offspring having a crest:

Using Math: Possible ‘crest’ alleles from father x possible ‘crest’ alleles from mother

2 X 2

Answer the following. Use information from Pigeon Breeding: Genetics at Work on the Learn.Genetics website to learn more about each inherited characteristic.

Crest The crest characteristic in pigeons has two alleles: ‘crest’ and ‘no crest’. ‘crest’ is recessive. Calculate the probability of the offspring of two heterozygous parents having a crest. Using a Punnett Square:

Name:

Date:

=

© 2014 University of Utah Pigeon Genetics – Student Worksheet 2

Learn.Genetics.utah.edu GENETIC SCIENCE LEARNING CENTER

Crest Explain how the following work together to give a pigeon a crest using the following words: ‘crest’ alleles, protein (for a bonus include: nucleotide and amino acid sequence):

Name:

Date:

Foot Feathering The Slipper characteristic is partially dominant, meaning what we see is the product of both alleles that are inherited. The ‘No Grouse’ characteristic is dominant.

What is the genotype of the foot feathering seen here?

Draw the foot feathering you’d see on a pigeon with the ‘slipper’, ‘no slipper’ and ‘grouse’, ‘no grouse’ genotype.

© 2014 University of Utah Pigeon Genetics – Student Worksheet 3

Learn.Genetics.utah.edu GENETIC SCIENCE LEARNING CENTER

Wing Pattern Wing pattern is determined by four alleles that follow a hierarchy of dominance.

Wing Pattern Draw the correct phenotype for each genotype below.

M ore dominant

The Pattern gene comes in 4 versions:

‘T-check’ allele

‘Check’ allele

‘Bar’ allele

‘Barless’ allele

Genotype Phenotype Genotype Phenotype

Name:

Date:

© 2014 University of Utah Pigeon Genetics – Student Worksheet 4

Learn.Genetics.utah.edu GENETIC SCIENCE LEARNING CENTER

Color Color is determined mainly by one gene on the sex chromosome Z. This is known as ‘sex-linked.” In addition, Color alleles have a hierarchy of dominance. In order of most to least dominant they are: ‘ash red,’ ‘blue,’ ‘brown’

Color Calculate the probability of female offspring of the following cross NOT being red. Use a Punnett square or math.

Genotype Phenotype

Ash-red

Genotype Phenotype

Ash-red

Color gene comes in 3 versions:

‘Ash-red’ allele

‘Blue’ allele

‘Brown’ allele

chromosome

chromosome: No color gene

W

Z

Male — Female — WZ Z Z

More dominant

Name:

Date:

© 2014 University of Utah

Learn.Genetics.utah.edu GENETIC SCIENCE LEARNING CENTER

Pigeon Genetics – Student Worksheet 5

Spread Pigment distribution is determined by the Spread gene, the ‘spread’ allele being dominant to ‘no spread’. The ‘spread’ allele masks underlying wing pattern, which is known as epistasis. Circle the parental genotypes that could possibly produce the offspring shown:

Possible parental genotypes:

Name:

Date:

© 2014 University of Utah

Learn.Genetics.utah.edu GENETIC SCIENCE LEARNING CENTER

Pigeon Genetics – Student Worksheet 6

Recessive Red The Recessive Red gene also determines feather color and is different from the Color gene. The recessive red characteristic is recessive (meaning two copies of the allele must be inherited) and epistatic to wing pattern.

Calculate the probability that offspring from the following cross will show a wing pattern. Circle the genotypes that would show a wing pattern.

Dilute The Dilute gene also influences color, making some pigeons a lighter shade of their inherited feather color. The Dilute gene is sex-linked, residing on the Z chromosome and has two alleles: ‘dilute’ and ‘not dilute’. Calculate the probability of male offspring of the following cross being a lighter shade. Use a Punnett square or math.

Color

Dilute

Color

Dilute

Male Female

WZ Z Z

Name:

Date:

The Recessive Red gene comes in 2 versions:

‘Not recessive red’ allele (dominant)

‘Recessive red’ allele (recessive)

  1. numerator 1:
  2. numerator 2:
  3. Probability:
  4. Name:
  5. Date:
  6. Explain:
  7. Genotype:
  8. Probability 2:
  9. Phenotype 1: Off
  10. Phenotype 2: Off
  11. Phenotype 3: Off
  12. Phenotype 4: Off
  13. Phenotype 5: Off
  14. Phenotype 6: Off
  15. Phenotype 7: Off
  16. Phenotype 8: Off
  17. Phenotype 9: Off
  18. Phenotype 10: Off
  19. Phenotype 11: Off
  20. Phenotype 12: Off
  21. Phenotype 13: Off
  22. Probability 3:
  23. Probability 4:

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