Which situation would most likely result in evolution? question 2 options: an alligator has no alleles for scales. a large population loses a few individuals. a single individual joins a large population. a predator prefers one phenotype to another.

The correct answer is: A predator prefers one phenotype to another.

There are variations in every population meaning that individuals are different at both, genetic and phenotypic level.

Natural selection is one of the evolutionary mechanisms, meaning that it changes allele frequency over generation. There must be genetic variation in population so that the natural selection can act. Natural selection acts on an organism’s phenotype (observable features) by favoring the most suitable ones (for survival).

If predator prefers one phenotype to another, another phenotype helps organisms survive and reproduce so that organism is better adapted for the environment. Natural selection ”selects” the best adapted trait.

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.  

answerclassical conditioning;