In pea plants, purple flowers (p) are dominant over white flowers (p). if two heterozygous purple-flowered plants are crossed with each other, then what are the possible genotypes of the offspring? a) pp only b) pp and pp c) pp and pp d) pp, pp and pp

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

the correct answer is d