Scientists discovered a fossil in China that belongs to a previously unknown species of an obscure group of small dinosaurs, related to primitive birds such as the famous Archaeopteryx. It had feathers, but they seemed too insubstantial to be useful in flight. Then the scientists said they recognized the unusually long, rod-like bone extending from each of the two wrists: curving structures possibly supporting an aerodynamic membrane. These scientists are grouping the found fossil with birds, based on structures

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explanation:

if you know the fur color of the offspring mice, you can use the ratios to identify the genotypes of the parents.

if either parent mouse passes a dominant allele, the offspring will have black fur.

if the parental mice has two different fur color (i.e white and black) , the color of the offspring's fur would be either black, white, or the combination of both (grey)

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explanation:

satellites are frequently used to make observations of the orbit on earth