When a black rooster without a crest was crossed with a brown crested chicken, all the offspring turned out to be black and crested

When a black rooster without a crest was crossed with a brown crested chicken, all the offspring turned out to be black and crested. Determine the genotypes of the parents and offspring. What are the dominant signs? What part of F2 hybrids will be brown without a crest?

In the second generation, there will be 1/16 brown chickens without a crest.

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