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- Which of the following illustrates the unity observed in organisms with a common ancestor? Flamingos and penguins are different colors. The gene for the human hormone insulin can be inserted into bacteria, and the resulting bacteria can use the gene to produce functional insulin. A robin can fly, but a penguin cannot. Fungi tend to absorb nutrients from other organisms, while animals consume their food. O Living organisms span a range of sizes.1) How have scientists created the "tree of life"? Do you think that variations exist between these created trees? 2) What are the pros and cons to creating a "tree of life"? 3) When constructing this tree of life we can see many dead ends or organisms that we are unsure of their exact placement. Why is this? 4) Choose one species (either alive today or extinct) and describe its taxonomic classification. What traits or characteristics were used to classify this species into its current taxonomic classification? What other organisms are considered to be its closest relatives?Which of the following is not a characteristic of a dichoto-mous key?(a) The dichotomous key has a “quartet” of statements de-scribing the characteristics of organisms.(b) Each statement is followed by directions to go to an-other pair of statements until the name of the organismis identified.(c) It is the most common type of key used by biologists toidentify organisms based on their characteristics.(d) Paired statements present an “either-or” choice so thatonly one statement is true.(e) a and b.
- Which of the following statements about the current classification scheme for all life on this planet are true (note, there are more than one correct answer). O The closest relatives to the Animal Kingdom which includes humans are the Fungi OThe taxonomic system arranges organisms from the most primitive, like fungi and bacteria, to the most advanced, like humans O All life can best be separated into 3 Domains: Bacteria, Archaea and Eukarya O All life can best be separated into 5 main Kingdoms: Plants, Animals, Fungi, Bacteria and Protists O All life can best be separated into 6 main Kingdoms: Plants, Bacteria, Archaea, Animals, Fungi, Protists and Plants Show all Ailler Chapter 2.pdf 11:05 PM 1/17/2021 P Type here to searchWhich of the following statements is correct about the hierarchy of the taxonomic system currently used to classify organisms? Many different families of organisms belong to the same order. Many different orders of organisms belong to the same species. O Many different classes of organisms belong to the same genus. O Many different kingdoms of organisms belong to the same phylum. Previous PauseIn the 18th century, Carl Linnaeus published a system for classifying living things, which has been developed into the modern classification system. Recently the classification system of life was changed to include not five but six kingdoms, as well as three domains. Earlier classification attempts were based mostly on structural features. Classification of many species, old and new, continues to be hotly disputed as scientists find new information or interpret facts in new ways. Now, DNA technology has allowed scientists to re-examine the relationships between organisms to refine the classification system. The Kingdom Monera in the old classification system included all bacteria. What two kingdoms now encompass prokaryotic organisms? Bacteria and archaea Eubacteria and archaea Bacteria and archaebacteria Eubacteria and archaebacteria
- The theory of evolution has long been a part of the study of biology in its attempt to explain the diversity of different life forms. Why do you think has it not been elevated as a Law?Imagine that you have the DNA sequences fromthe intron of a gene in three species called A, B,and C. Species A and B are most closely related,while C is more distantly related. The sequencesof A and B differ by 18 base pairs, A and C differby 26 base pairs, and B and C differ by 28 basepairs. Fossils show that species A and B divergedabout 1.2 Mya, but there is no fossil evidence asto when the most recent common ancestor ofall three species lived. Use the genetic data toestimate that date. What assumptions are youmaking to get this estimate?Why, in the evolution of eukaryotes, might ithave been advantageous for separate organismsto become united into a single organism? Canyou describe analogous, more recently evolved,examples of intimate symbioses that function asa single integrated organism?
- A scientist is attempting to a cladogram that shows the evolutionary closeness of three organisms in relation to humansAfter doing DNA analysis, they that the organisms share the following percentages of DNA Organism A and humans share 85% of their DNA Organismn and humans share 80% of their DNA Organism and humans share 90% of their DNA Based on informationwhich order should they go on the cladogram ( related to most related ?Linnaeus used a hierarchical system of classificatiol WILDI They are from largest to smallest: kingdom, phylum, class, order, family, genus, species, King Phillip Carne Qver Erom Greece Singing. Each of these levels is called a - largest category, group of related phyla. - group of different classes that share important characteristics. - group of similar orders. - group of similar families. - genera (genus plural) that share many characteristics. -group of closely related species. - group of similar organisms that can breed and produce fertile offspring. He developed a system called -each species is assigned a two-part scientific name consisting of genus +species. Always written in italics, first word (genus) first letter CAPITALIZED, second word (species) is lowercased. Example: humans-. Dichotomous Keys In the field, scientists often have to identify and classify specimens such as plants, animals, bacteria and other species using a dichotomous key. A dichotomous key is used to…Here is the question: What was the likely source of the raw material incorporated into the first life forms? I believe it is carbon, but I don't know why it is carbon. What I mean is, why is carbon considered the thing that makes something alive? Why are eukaryotes and prokaryotes simply considered alive just because they have carbon. Would that mean that carbon is alive because carbon has carbon? I would appreciate an anwser because I'm really trying to understand everything I run across. I love educating myself and I'm on a quest for knowledge. Thanks guys!