The answer your looking for is B different patterns of gene expression
Answer:
Mitochondrial DNA is useful as a molecular clock because it displays uniparental inheritance
Answer:
an opening into a vessel or cavity of the body.
Answer:
D i think sorry if its wrong ;-;
When compared to each other, bird wings and butterfly wings can be described as ANALOGOUS STRUCTURES,
Analogous structures are those body structures in animals, which are used to perform similar functions but which have different evolutionary history. They are also called convergent structures. These structures are formed as a result of the need for the animals to adapt to similar environmental conditions. For instance, both bird and butterfly use their wings for flying.
