<span>The answer to this question would be: Autosomal recessive gene.
P</span><span>henylketonuria is an inborn error of metabolism that caused by defect gene that inherited by autosomal recessive. That means the disease is not transmitted by contact as it wasn't caused by pathogens.
It needs two recessive genes to be expressed so the father and mother must have at least one defective gene.</span>
D should be the correct answer
Answer:
Air moves into the lungs from atmosphere
Explanation:
As per the gas law, pressure of a gas is indirectly proportional to the volume of the gas. Thus, if volume increases pressure decreases.
Here, the volume of alveoli has increased due to which the pressure within the alveolar space reduces such that the atmospheric pressure outside alveoli becomes higher than the alveolar pressure within the alveoli. Due to this difference in pressure, the air gushes into the lungs.
The answer is b it occurs in plant animals and bacteria
