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.

yeytyryyeyeyeyeyeeyeyey6

hypoxemia refers to a below usual concentration of oxygen in the blood, mainly in the arteries. hypoxemia is an indication of an issue associated with circulation or breathing and may lead to various symptoms like shortness of breath.  

the condition is identified by determining the level of oxygen in the blood sample obtained from an artery. it can also be predicted by determining the oxygen saturation of the blood with the application of a pulse oximeter.  

the normal arterial oxygen is about 75 to 100 mm hg. the values underneath 60 mm hg is generally considered with the requirement for supplemental oxygen. the normal pulse oximeter readings generally range between 95 to 100 percent. the values under 90 percent are regarded as low.  

in the given case, the oxygen saturation is measured at 93 percent, hence, there is no need to administer oxygen, that is, one should withhold oxygen.