Answer:
the genotype of the parent guinea pigs are as follows:
RrBb (rough, black) and Rrbb (rough, white)
Explanation:
Since the phenotype of smooth coat is present in the offspring, the parent genotype cannot have RR alleles for their coat. Similarly, the rough, black parent cannot have BB alleles in its genotype because that will not yield a white coat color in its offspring.
After making the dihybdrid cross, the probability obtained for each phenotype is given below:
rough black: 
rough white: 
smooth black: 
smooth white: 
Hope that answers the question, have a great day!
Answer:
Pulmonary embolism.
Explanation:
In the above scenario, this could be pulmonary embolism case because Mr. Jackson's condition and their symptoms shown towards the pulmonary embolism.
In pulmonary embolism, an artery present in the lungs block by a substance that can be transfer from any part of body through blood circulation and stuck in the artery of lungs and due to this shortness of breath, sever chest pain during coughing or breathing in.
So, the above condition of Mr. Jackson shows pulmonary embolism.