1. There is fossil evidence that fish evolved into amphibians and amphibians into reptiles. Scientists also believe that mammals are related to reptiles
Research the fossil history of fish, amphibians and mammals and discuss the evidence that the above statement is true. Provide examples of the links between the organisms (for example: the respiration system, how the young are born and what the body is covered with).
There has been scientific evidence has proven that the above statement is true. The first vertebrates on the planet, fish provided the basic "body plan" in turn expanded on by hundreds of millions of years of development: so in other words, your great-great-great (multiply by a billion) grandmother was a small, humble fish of the Devonian age.
The fossil history of amphibians provide evidence of the first tetrapods: now-extinct amphibian species going back nearly 400 million years. Evolution of tetrapods from fishes represented a significant change in body plan from one suited to organisms that respired and swam in water, to organisms that breathed air and moved onto land. These …show more content…
As species have differentiated over the years, the DNA classification in their genes obtain minimal changes. Because the DNA sequences determine a portions amino acid sequence, a gene that is shared by two closely related organisms should have a similar, or even identical amino acid sequence. The major link form of the protein encoded by the gene is 715 amino acids long and the protein is identical, with no differences whatsoever in chimpanzee, gorilla and the rhesus monkey. The mouse FOXP2 differs in just one amino acid from these three species. However, human FOXP2 genes differs from that of a gorilla, chimp and rhesus macaque in two further amino acids. So, in 75 million years since the divergence of mouse and chimpanzee lineages only one change has occurred in FOXP2
Research the fossil history of fish, amphibians and mammals and discuss the evidence that the above statement is true. Provide examples of the links between the organisms (for example: the respiration system, how the young are born and what the body is covered with).
There has been scientific evidence has proven that the above statement is true. The first vertebrates on the planet, fish provided the basic "body plan" in turn expanded on by hundreds of millions of years of development: so in other words, your great-great-great (multiply by a billion) grandmother was a small, humble fish of the Devonian age.
The fossil history of amphibians provide evidence of the first tetrapods: now-extinct amphibian species going back nearly 400 million years. Evolution of tetrapods from fishes represented a significant change in body plan from one suited to organisms that respired and swam in water, to organisms that breathed air and moved onto land. These …show more content…
As species have differentiated over the years, the DNA classification in their genes obtain minimal changes. Because the DNA sequences determine a portions amino acid sequence, a gene that is shared by two closely related organisms should have a similar, or even identical amino acid sequence. The major link form of the protein encoded by the gene is 715 amino acids long and the protein is identical, with no differences whatsoever in chimpanzee, gorilla and the rhesus monkey. The mouse FOXP2 differs in just one amino acid from these three species. However, human FOXP2 genes differs from that of a gorilla, chimp and rhesus macaque in two further amino acids. So, in 75 million years since the divergence of mouse and chimpanzee lineages only one change has occurred in FOXP2