When truebreeding an Azule flower expressing a blue color BB

When true-breeding an Azule flower expressing a blue color (BB) with an Azule flower expressing no color, or white, (bb); the F1 progeny results in all blue flowers. Crossing two F1 generation flowers results in 66 blue and 20 white flowers; for a total of 86 progeny. Determine the critical value for this experiment. Your hypothesis is that flower color is controlled by a single gene. Perform a Chi square analysis to test your hypothesis. You will have to determine what ratios of phenotypes you expected to see based on Mendelian genetics. Will your hypothesis be rejected or accepted? Show ALL your work.

Solution

Answer:

BB(blue) x bb (white)----------Parents

Bb(blue)-------------------F1

Bb x Bb

Phenotypic ratio: Blue (75%) : White (25%)

Chi-Squre test:

The hypothesis is accepted.