If heavy rains caused an abundance of small, tender seeds and fewer large seeds, what do you predict would happen to the average beak size of the finches?
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If heavy rains caused an abundance of small, tender seeds and fewer large seeds, what do you predict would happen to the average beak size of the finches?
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- Researchers observed that the crows only gather and drop thelargest whelks. What are some reasons crows might favor largerwhelks?What do you think will happen to future generations of finches? Why?You are a researcher studying birds in an Indonesian rainforest. You have just discovered two new species whose beaks are markedly different, which you have named Laetiphonia orthorhynchus and Laetiphonia rhamphis. In particular, the beaks of L. orthorhynchus are very long, straight and pointed, whereas L. rhamphis have beaks that are quite short, wide and curved downwards. In further studies, you find that the same gene codes for beak shape in both species. In your own words, explain at least two ways that changes in gene expression could result in the differences you observe between these two species. Make sure to be specific in how your explanation applies to the bird species in this example.
- what's unusual abt the songs of wrensHow do birds sing?The special adaptations of birds contribute to two essentials for flight: more power and less weight. Explain how each of the following contributes to one or both of these two essentials: feathers, skeleton, muscle distribution, digestive system, circulatory system, respiratory system, excretory system, reproductive system.