What Is Figure 3-1 Demonstrate A Tree-Like Structure Or Web Structure?

According to Ms. Witsaman, evolution is not the theory of how life began, which is a common misconception nowadays, but the theory of how life has changed over time. Theories are predictions which are backed up by several evidences and supported by scientists. The evidences that scientists use now to prove include fossils, homologous structures, analogous structures, vestigial structures, embryology, biogeography, and biochemicals. Fossils are the remains of living things that once roamed the Earth. Homologous structure are structures shared by different organisms that have similar structure but different functions. Analogous structures are the opposite, they have similar functions but completely different structure.Vestigial structures are

Prior to the development of DNA technology and the sequencing of organismal genomes, Charles Darwin suggested that the “tree” of life can be traced back to a single root (Koonin and Wolf, 2012). While Darwin’s theory was primitive, it laid the groundwork for the phylogenetic trees that are currently studied in science classrooms around the world. The three-domain tree, containing Eukarya, Archea, and Bacteria, soon became too simplistic due to the realization that some bacteria possessed the ability to exchange genetic information by horizontal gene transfer (Koonin and Wolf, 2012).

Introduction: Almost every place on Earth, from the surface of your skin to the bottom of the ocean, is teeming with living things. To keep track of the vast diversity of life, biologists historically named and classified organisms according to their appearance. The system of categorizing organisms is

“The main lesson of biogeography is that only evolution can explain the diversity of life on continents and islands.” (Coyne 109).In convergent evolution 3 of the six components discussed in chapter 1 are working together. These 3 components are common ancestry, speciation, and natural selection. If evolution did exist, ancestors of species today that lived in the same place, when dug up, should be fossils that resemble organisms today.

All primates have a common ancestor, from millions of years ago. Go further back, and you will find a common ancestor for all mammals. Then a common ancestor for all vertebrates, then animals, then all life on earth. How closely two organisms are related can be deduced by looking for homologous structures, structures that look similar and have a similar function. This proves that the organisms descended from a common ancestor. Station 1 contained multiple vertebrate skeletons. They all had homologous structures, including a vertebral column and a rib cage. This shows that all vertebrates are related and come from a common ancestor with a

1. Did the construction of the phylogenetic tree based on the 14 living Caminalcules change the way you would group Caminalcules species in your taxonomic classification (chart)? What does this suggest about classification based on strictly of similarity versus evolutionary relationship?

The purpose of this study is to identify four unknown organisms. The unknown organisms have been assigned randomly to six-research groups by Professor Hoffman. Each research group was provided two eukaryotes and two prokaryotes. The unknown organisms will fall into the following classifications: bacteria, algae, fungi, or protozoans. All living organisms are organized into one of three domains of life, Bacteria, Archaea, and Eukarya.

According to our text species of living things are related in some fashion similar to a branching tree. However the process is not quite that simple adaption relies on several processes and to prove this or the

8. Domain- A classification of life that includes Archaea, Bacteria, and Eukarya. This is above Kingdom.

Both the cladogram and the web of life display the three domains of life to be studied. Also, they both do not show true evolutionary history with branch lengths that show evolutionary time. The web of life also starts its branches off much thicker and gradually narrows into individual arrows at the top into its separate kingdoms and domains. This shows that life did later became much more diverse. Although not same in structure, my cladogram, however, does also show that the domains became more complex over time, beginning with absent organelles from Domain Bacteria and Archaea to having organelles with non-circular chromosomes in Domain

if we look at the general shape of the approaches to hacking life, there are current, consensus, six kingdoms. Which is planets, animal, fungi, protests, little things, and bacteria.

chain of being was a sort of tree of life, gradually sprouting upward from basic

Similar characteristics due to relatedness from a common ancestor are known as homologies or homoplastic/homologous traits. Homologies can be revealed by comparing the anatomies of different living things, looking at cellular similarities and differences, studying embryological development, and studying vestigial structures within individual organisms (Understanding Evolution, 2008). Homologous traits are traits that are derived by evolution from a common ancestor. Homologous proteins might share a common ancestor, however they may not have the exact same function for the trait. Although organisms may have homologous traits, the use of these traits may differ due to evolution. This leads into biochemical homologies. These are metabolic pathways and/or genetic mechanisms that may have been present in a single celled ancestor and have evolved into similar structures on a bigger scale in a common ancestor down the road (Southan,

Eukaryotes come in two grades of organization: single-celled (protists) and multicellular (plants, animals, and fungi). The world today is full of complex multicellular plants and animals: how, why, and when did they evolve from protists?

Primarily, the Archaea were once believed to be just another rare group of bacteria, because like bacteria, they are single-celled microscopic prokaryotic organisms with no membrane bound nucleus (http://www.fossilmuseum.net/Evolution/archaeaevolution.htm). Despite the similarities in the cell structure of Eubacteria and Achaea, molecular research by Dr Carl Woese and his co-workers indicated that they differ significantly on the molecular level (Bacteria in Biology, Biotechnology and medicine, Paul singleton). In this essay, am going to discuss the differences and similarities in the fundamental cellular feature of both organisms.