Answer to Question #287679 in Genetics for Jay

Question

You are breeding rare unicorns for two traits: colour and tail length. You know from your experience that if you take a purebred blue unicorn and cross it with a purebred yellow unicorn all of the offspring are green unicorns. For tail length, you know that long tails are dominant over short tails. You cross a unicorn that is green and has a short tail with one that is green and has a long tail(heterozygous). What is the F1 generation? 

Answer 1

green unicorns and long tails