The picture below represents; A. Gas
These alternative genes are called alleles
-<span>- </span><span>It is considered to </span>be<span> the link between the lobe-finned fishes and early ... Climate and</span>geography<span> ... </span>Sea<span> levels were high with </span>much<span> of western North </span>America<span> under water. ... By the mid-Devonian, the </span>fossil record<span> shows evidence that there ... Plants, which had begun colonizing the land</span>during<span> the Silurian ...</span>
