First, determine the genotype of the individual. Black is the dominant trait and is indicated by B, pacing is a recessive trait and is indicated by t. What is the genotype of an individual homozygous for each of these traits?






Now, unless you have been told that the traits of color and gait in horses are on the same chromosome, you may assume that they sort independently. The illustration at the right shows the two homologous pairs of chromosomes after replication but before meiosis.





Which of the images below show the cells produced at the end of meiosis I for the above chromosomes?




Which of the images below show the cells produced at the end of meiosis II for the above chromosomes?





Now return to the question page and select the correct answers.





First, determine the genotypes of the parents. We already know that the homozygous black pacer has a genotype of BBtt. What would be the genotype of the homozygous chestnut trotter?



We also know that the black pacer produces gametes that are all Bt. Using the same process as before, determine the gametes produced by the chestnut trotter:






Now, unless you have been told that the traits of color and gait in horses are on the same chromosome, you may assume that they sort independently. The illustration at the right shows the two homologous pairs of chromosomes for the F1 generation after replication but before meiosis.





Which of the images below show the cells produced at the end of meiosis I for the above chromosomes?




Which of the images below show the cells produced at the end of meiosis II for the above chromosomes?





Now return to the question page and select the correct answers.