Question 3: we have discussed the cell biology of the genetic disease cystic fibrosis (cf). the most common
cftr variant associated with cf is a deletion of a phenylalanine at position 508 in the protein sequence. this
is due to the deletion of a codon in the dna sequence that codes for cftr protein.
a. two healthy parents have a healthy son and a daughter with cf. what is the inheritance pattern for cf?

your spelling is a little off : ]

wegner's theory did not explain how the continents could move

explanation:

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.  

the answer is definitely a