Cross-fertilizing a pure strain of red flowers with a pure strain of white flowers produces pink hybrids that have one gene of each type. Crossing these hybrids can lead to any one of four possible gene pairs. Under Mendel's theory, these four are equally likely, so

An experiment carried out by Correns, one of Mendel's followers, resulted in the frequencies 141, 291, and 132 for the white, pink, and red flowers, respectively. (Source: W. Johannsen, 1909, Elements of the Precise Theory of Heredity, G. Fischer, Jena.)
Do these observations appear to contradict the probabilities suggested by Mendel's theory?

Transcribed Image Text:

"(white)- P( pink)- P(red) = 4