Create a dihybrid cross and determine the expected phenotypic percentages of the offspring of two corn plants both of which are heterozygous for colour and texture (PpMm X PpMm). Don’t forget to include clear let statements, and follow the steps taught on solving genetics problems.
Background: Each kernel on a cob of corn is a seed for a corn plant. Each kernel can be planted and a whole new corn plant can grow from this kernel. Each cob of corn has hundreds of kernels which were each created by the fertilization of hundreds of eggs from one corn plant and hundreds of pollen from another corn plant. Corn cobs allow for easy genetic analysis because looking at a corn cob is like looking at the hundreds of offspring created from two parents. Corn kernels can come in different colours and textures. It has been determined that purple (P) corn kernels are dominant to yellow (p) corn kernels. Smooth (M) kernels are dominant to shrunken (m) kernels.
Purpose: With the use of chi-square analysis, determine if one should accept or reject the hypothesis that both parents that created a cob of corn were heterozygous for colour and heterozygous for texture (PpMm X PpMm).
Apparatus &
Method:
- Create a dihybrid cross and determine the expected
phenotypic percentages of the offspring of two corn plants both of which are heterozygous for colour and texture (PpMm X PpMm). Don’t forget to include clear let statements, and follow the steps taught on solving genetics problems.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
