This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: and Zz genotypes have long stems and zz genotypes have short stems. You have a long-stemmed plant and want to know the genotype so you cross it with a short stemmed plant. About half of the plants from this cross have long stems and the other half have short stems. a. (2 pts) From this you conclude that the genotype of the original long-stemmed plant was: b. (3 pts) If you did a self-cross with the original long-stemmed plant, what would these look like and in what ratios? What would the genotypes be? c. (1 pt) Why is a test cross always done with a recessive strain/genotype? 3. part a (1 pt) Imagine that you have found a very unusual cat with curled ears. When you mate this cat with a normal cat you get 2 cats with normal ears and 2 cats with curled ears. This result indicates that the curled ear phenotype is likely to be: a. recessive b. dominant c. it could be either dominant or recessive part b. (2 pts) Write out all the genotypes for the answer in part a:...
View Full Document