How many alleles do you get from each parent?

23 from the dad 23 from the mom to make 46 to make the baby

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.

genetic variation will increase because of a new habitat and food source.

explanation: