1. Tardigrade
  2. Question
  3. Biology
  4. Andalusian fowls have two pure forms — black and white. If black forms (BB) and white forms (WW) are crossed, F1 individuals appear blue coloured (BW), due to incomplete dominance. Which of the following would be an outcome of a cross between black form and blue form ?

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Q. Andalusian fowls have two pure forms — black and white. If black forms $(BB)$ and white forms $(WW)$ are crossed, $F_1$ individuals appear blue coloured $(BW)$, due to incomplete dominance. Which of the following would be an outcome of a cross between black form and blue form ?

Principles of Inheritance and Variation

Solution:

The cross between blue $(BW)$ and black $(BB)$ forms can be shown as :
image
Thus, black and blue individuals are produced in the ratio of $1:1$.