You have come across a dog, named cindy, that does not have a tail. interestingly, about half of all the puppies produced by this dog don't have a tail either. if the lack of tail is caused by a genetic mutation, what kind on mutation is this and where has this mutation most likely taken place?

a. a dominant mutation, in cindy's gametes.

b. a recessive mutation, in the cells that should normally have given rise to cindy's tail.

c. a recessive mutation, in the cells that should normally have given rise to cindy's and her puppies' tails.

d. a dominant mutation, in all of cindy's cells (including her gametes).

e. a dominant mutation, in a gamete of one of cindy's parents.

E. a dominant mutation, in a gamete of one of cindy's parents.

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.