20. mendel's law of segregation states that
a. if a parent has a dominant allele, its offspring will exhibit the dominant trait only.
b. traits tend to segregate, with multiple recessive traits often showing up in the same offspring.
c. genes are segregated independently of each other.
d. offspring receive one allele for each trait from each parent, and the allele from each parent is distributed randomly.

C

Explanation:Mendel's first law (also called the law of segregation ) states that during the formation of reproductive cells (gametes), pairs of hereditary factors (genes) for a specific trait separate so that offspring receive one factor from each parent.

i believe the answer would be b. hope it : )

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.