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Download Name: ANSWER KEY Period: The Enchanted Equines of Enchancia
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Name: ANSWER KEY Period: The Enchanted Equines of Enchancia INSTRUCTIONS: Enchancia is a far-off land that has strong ties to agriculture. The founding fathers of the land brought horses with them when they settled the area over a thousand years ago. Over time, the people of Enchancia have bred beneficial mutations in to the horses to create animals that can be used for a number of purposes. While breeding these animals, they have also learned which traits are dominant and which traits are recessive. Complete the worksheet to unlock the genetic key of the horses of Enchancia. Genetic Key Upper case letters represent ___Dominant___traits/alleles; Lower case letters represent ____Recessive___ traits/alleles N = NORMAL NECK n = longer neck E = BROWN EYES e = blue eyes H = NORMAL HAIR h= longer hair F = FEATHERING f = no feathering B = FULL SIZE b = miniature L = NORMAL TO LONG TAIL l = naturally docked U = NO HORN u= uni-horn M = HEAVILY MUSCLED m = normal muscle T = ONE SOLID HOOF t = split hoof W = NO WINGS w = wings S = SPOTS s = no spots X= sex chromosome Y= sex chromosome (XX = female) (XY = __Male____) Using the key, answer the following questions. 1. What letters are used to represent eye color? ____E and e________________________________ 2. What letters are used to represent neck length? ___N and n___________________________________ 3. The letter “T” is used to represent Solid Hoof 4. The letter “e” is used to represent ______Blue Eyes________________________________________ 5. List the genotypes and phenotypes of 4 dominant traits shown in the key. Students should include Capital Letter representing dominant allele AND the written description (N= Normal Neck) 6. List the genotypes and phenotypes of 4 recessive traits shown in the key. Students should include Lowercase Letter representing recessive allele AND the written description (m= Normal Muscle) INSTRUCTIONS: Using the key from the previous page as a reference, fill in the missing symbols for alleles (genotypes) or descriptions of physical appearance (phenotypes) in the table below. Trait Genotype Homozygous or Heterozygous? Phenotype Neck NN Homozygous Dominant Normal neck Neck Nn Heterozygous Normal neck Neck nn Homozygous Recessive Longer neck Eye Color ee Homozygous Recessive Blue eyes Eye Color EE Homozygous Dominant Brown eyes Eye Color Ee Heterozygous Brown eyes Horn uu Homozygous Recessive Uni-corm Muscles Mm Heterozygous Heavily Muscled Feathering? ff Homozygous Recessive No feathering Feathering? Ff Heterozygous Feathering Wings WW Homozygous Dominant No Wings Wings ww Homozygous Recessive Wings Spots ss Homozygous Recessive No Spots Hooves TT Homozygous Dominant Solid Hoof Hooves tt Homozygous Recessive Split Hoof Tail length Ll Heterozygous Normal Tain Tail Length ll Homozygous Recessive Docked Tail Hair hh Homozygous Recessive Longer Hair Size BB Homozygous Dominant Normal Size If you were a farmer raising corn in Enchancia, give the genotype and phenotypes of three traits that you would want in your horse that you use for work on the farm and tell why Genotype Phenotype Why This Trait?
