Single Black Rose

An incompletely dominant gene controls the color of chickens so that BB produces black. Bb produce …?

a slate-gray color called blue, and bb produces splash white. A second gene controls the shape of the comb, with the dominant gene R producing a rose comb and r producing a single comb. A pure breeding black chicken with a rose comb was attached a white chicken sprinkled with a single comb, and the F2 generation was produced. What fraction of the F2 offspring will be black with rose comb? a. 9.16 b. C. 8.3 16.03 d. E. 01.08 16/01 thanks in advance!

Parents: BBRR x bbrr F1: all BbRr, all blue, rose F2: gametes from each parent are br br br br Enter the four at the top of the Punnett square and write a second series of the four gametes in the left side of the square. How many of the 16 boxes containing BBRR or BBRr as are only two genotypes that produce black, pink phenotype? You must have a BBRR BBRr and 2 of each of the 16 boxes. The expected fraction of the children with black, pink phenotype is 3 / 16.

The Rasmus – Ten Black Roses ( new single)

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