Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Deoxyribozyme wikipedia , lookup
Non-coding DNA wikipedia , lookup
Point mutation wikipedia , lookup
Community fingerprinting wikipedia , lookup
Genetic code wikipedia , lookup
Biosynthesis wikipedia , lookup
Microbial metabolism wikipedia , lookup
Evolution of metal ions in biological systems wikipedia , lookup
Macroevolution What is Macroevolution? Evolution happening on a large scale; results in the formation of new taxonomic groups. Evidence: Fossil Record The picture may be smudged in places Serve as snapshots of the past can and may have bits missing, butthat fossils should show that life evolutionary is old and haschange. changed over time. Fossil records can have missing pieces and be dated inaccurately; not always best evidence Evidence: Comparative Morphology Studying shapes and structures of organisms. Homologous Structures Structure present in organisms that have visible similarities, but different functions Divergent Evolution Organisms are thought to have the same ancestor, but separated (diverged) over time Analogous Structures Structure of an organism that is similar in function, but different in structure. Convergent Evolution Organisms are thought to have different ancestors, but have developed similarities (converged) over time due to environmental pressures Vestigial Structures Structures that have no real function; thought to have been used at one point in time Evidence: Embryology Study of embryos and their development What does this mean? Later in Similarities in development DNA Embryos have 2 development starts expressing similarities: show a potential specific common characteristics for 1. Gillancestor Slits 2.each Tail organism Evidence: Biochemistry • Compare the monomers of DNA, RNA, and sequences of proteins between different organisms. • Found similarities between organisms Study of amino acid sequences within hemoglobin in several organisms when compared to humans. Organism Different Amino Acids 67 What does this mean? Chicken 65 A possible common ancestor Mouse 27 Gorilla 1 Frog