Which of the following is a plausible pathogenic scenario? choose the correct answer from the following choices, and then select the submit answer button. a mutation that prevents the addition of co2 to the terminal amino group of the β chain leads to increased affinity of hemoglobin for o2, resulting in acute hypoxia. a mutation that eliminates the activity of an enzyme involved in porphyrin synthesis leads to increased anemia. a mutation that allows normal fetal hemoglobin to continue being produced into adulthood would enhance symptoms of sickle-cell disease. all of these scenarios are plausible. only the second and third scenarios are plausible.

The correct answer is option - only second and third scenarios are plausible.

Explanation:

A mutation that removes or eliminates the activity of the enzyme that is responsible or involved in synthesis of the porphyrin which cause pathogenic condition called anemia.

A mutation that allows that cause normal fetal hemoglobin to keep on producing into adulthood would enhances symptoms of sickle cell that is also a pathogenic condition.

Thus, the correct answer is option - only second and third scenarios are plausible.

the answer to your question is sperm

answer: accepted answer: aquatic animals use the oxygen dissolved in water to carry out respiration. since the amount of dissolved oxygen in water is low as compared to the amount of oxygen in the air, therefore the rate of breathing in aquatic animals is much faster than it is in terrestrial animals.

explanation: