Two genes, CaM and BMP4, control beak and , respectively, in finches. High levels of CaM expression will result in beaks, whereas low levels of CaM expression will result in beaks. High levels of BMP4 expression will result in beaks, whereas low levels of BMP4 expression will result in beaks. Therefore, the degree of expression and, consequently, the amount of produced, affects beak development in utero. Therefore, small changes to the within a developing embryo could result in the formation of new species, providing both evidence and a mechanism for .

1. Beak shape and depth

2. Long beaks; short beaks

3. Tall beaks; shallow beaks

4. Protein

5. Genes; macroevolution

Explanation:

Two genes, CaM and BMP4, control beak shape and depth, respectively, in finches. High levels of CaM expression will result in long beaks, whereas low levels of CaM expression will result in short beaks. High levels of BMP4 expression will result in tall or deep beaks, whereas low levels of BMP4 expression will result in shallow beaks. Therefore, the degree of expression and, consequently, the amount of protein produced, affects beak development in utero. Therefore, small changes to the genes within a developing embryo could result in the formation of new species, providing both evidence and a mechanism for macroevolution .

Note:

The BMP4 gene is the gene for Bone morphological protein 4. It determines how deep or tall the beak will be.

The CaM gene is the gene for Calmodulin. It regulates how long a beak will grow.

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.

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