Vestigial structures are remains of a structure that was functional in some ancestor but is no longer functional in the organism in question.
a. true
b. false

Blood has traveled from the heart to the toes. which describes the next step of the circulation process?

Which entry is in the wrong position in the table?

What evidence did mendel find that supported his law of independent assortment? a. some traits are controlled by several different genes. b. a trait can be passed on from a parent to an offspring. c. most traits have a dominant form and a recessive form. d. different traits are passed on independently of each other.