<span>The answer is ‘They
are evidence that all came from a common ancestor and that life changed over
time for all these organisms’. The individuals
of the ancestor population probably spread
out and became separated b geographical features
or behavioral modification. Over time, this caused
allopatric or/and sympatric speciation. However, these species still bear
homologous structures that show this common
ancestry. </span>
Answer:
Tricuspid valve
Explanation:
The tricuspid valve helps push blood only from the right atrium into the right ventricle
Heritability deals mostly with genes in natural and artificial selection, which means it can be passed down from generation to generation through our genes.
