• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
document
document

... b. analogous structures. c. vertebrates. d. arms. • a. homologous structures. ...
TFSD Unwrapped Standard 3rd Math Algebra sample
TFSD Unwrapped Standard 3rd Math Algebra sample

... 9-10.B.5.2.1 Explain how science advances technology. 9-10.B.5.2.2 Explain how technology advances science. 9-10.B.5.2.3 Explain how science and technology are pursued for different purposes. National Standards: C.3.a Species evolved over time C.3.b The great diversity of organisms is the result of ...
Theory of evolution by natural selection
Theory of evolution by natural selection

... generally formed when the organism or its traces are quickly buried by sediments carried by water, wind or ...
CLADISTICS: UNRAVELING EVOLUTION
CLADISTICS: UNRAVELING EVOLUTION

... formation of evolutionary "trees" (based on shared characteristics, assuming lines of inheritance of the genes for the characteristics) Taxonomy: classification of organisms into groups Phylogenetic systematics: taxonomy to follow/illuminate phylogeny Cladistics: mathematical system for phylogenetic ...
Click www.ondix.com to visit our student-to
Click www.ondix.com to visit our student-to

... The most direct proof of evolution is the science of Paleontology, or the study of life in the past through fossil remains or impressions, usually in rock. Changes occur in living organisms that serve to increase their adaptability, for survival and reproduction, in changing environments. Evolution ...
ch18 Classification
ch18 Classification

... The goal is to understand to evolution of the fossil and to indentify both its ancestors and its relatives that might have later evolved into other species. Because data about fossils is usually very poor, fossils have been grouped based on superficial similarities. These groupings are called “form ...
Chapter 18 CLASSIFICATION AND SYSTEMATICS
Chapter 18 CLASSIFICATION AND SYSTEMATICS

... The goal is to understand to evolution of the fossil and to indentify both its ancestors and its relatives that might have later evolved into other species. Because data about fossils is usually very poor, fossils have been grouped based on superficial similarities. These groupings are called “form ...
evolution - Fall River Public Schools
evolution - Fall River Public Schools

... organisms’ ancestors. Example: Remnants of the pelvis and leg bones are found in some snakes.  Molecular homologies are shared characteristics on the molecular level. Examples: All life-forms use the same genetic language of DNA and RNA. Amino acid sequences coding for hemoglobin in primate species ...
Glossary - The Teacher-Friendly Guide™ to Evolution Using
Glossary - The Teacher-Friendly Guide™ to Evolution Using

... Collective term for the dorsal border of the articulated valves, including the ligament, hinge teeth, and other structures that function to permanently unite the two valves. The study of cells and tissues at the microscopic level. Living as plankton through all stages of a life cycle. Having the sam ...
Name Date Period ______ Take Home Test : Evolution
Name Date Period ______ Take Home Test : Evolution

... 9. The genetic equilibrium of a population can be disturbed by a. movement into and out of the population. b. a small population size. c. mutations. d. all of the above 10. Which statement is in agreement with Darwin’s theory of evolution? a. More offspring are produced than can possibly survive. b. ...
What is a Species?
What is a Species?

... individual organism of a species dies.  A mass extinction occurs when many species become extinct within a few million years or less.  Extinctions can occur when environments change and organisms can’t adapt quickly enough ...
Chapter 4 Notes
Chapter 4 Notes

... common ancestor • Variations in the structure over time made the homologous structures useful adaptations for different environments • Analogous structures (those with a similar function, but different origins) do not lend evidence to evolution – Ex: convergent evolution in species (ie: pandas / hum ...
The Theory of Evolution
The Theory of Evolution

... Islands and did not see the different finches competing or eating different foods. During the rainy season, there is plenty of food and finches are able to eat anything. In the dry season drought, food becomes scarce and differences in beak size can mean the difference between life and death. What t ...
Evolution IS
Evolution IS

... C. Lamarck’s (1809)Theory of Evolution: – By selective use or disuse of organs, organisms either acquired or lost certain traits during their lifetime. – Acquired traits would then be passed on to the next generation ...
Mr. Ramos Evolution Study Guide Students, here is a study guide for
Mr. Ramos Evolution Study Guide Students, here is a study guide for

... Ultimately, molecular evidence suggests that mutations, or changes in the DNA as a result of error, lead to variations among species that would add up over generations and result in all the diversity there is on Earth today. We see molecular evidence for evolution by comparing DNA from different org ...
Evolution
Evolution

... Fitness: › Is a measure of an individual’s hereditary ...
CHARLES DARWIN AND EVOLUTION I. Geologists have
CHARLES DARWIN AND EVOLUTION I. Geologists have

... for similar genes. 2. The molecular record indicates that there are several patterns of evolution. 3. Scientists also examine proteins that living organisms produce. Many species produce similar proteins, so researchers look for how many related proteins organisms produce to examine similarities. 4. ...
History of Life and Evolution ppt
History of Life and Evolution ppt

...  But, many embryos look especially similar during early stages of development. ...
Ch.15 - Jamestown Public Schools
Ch.15 - Jamestown Public Schools

...  As a result, species today look different ...
Chapter 21 – Adaptations and Speciation ()
Chapter 21 – Adaptations and Speciation ()

... Sometimes two species can interbreed to produce a sterile offspring. Eventually, the sterile hybrid organism can be transformed into a fertile species. This as well occurs most often in plant populations. ...
Supporting Evidence for Evolution
Supporting Evidence for Evolution

... Convergent evolution Convergent evolution: unrelated pathways to different species develop similar traits.  Similar traits develop due to ...
Evolution Quiz Week 9
Evolution Quiz Week 9

... o Plate with holes big enough for a molecule. Plate covered with one nucleotide which attaches to molecule . Cheaper per molecule than other techniques  RAD (Restriction site Associated DNA) sequencing o Cut DNA with primer, sequence DNA next to cuts o DNA sequenced with a barcode, can do up to 100 ...
file - MabryOnline.org
file - MabryOnline.org

... 29. The separation of a group of organisms from the rest of its species by a mountain range is an example of ____________________ isolation. 30. New species formed when groups were isolated by the process of ____________________, in which Pangaea split apart. 31. The forelimbs of a bird and a mammal ...
File
File

...  Speciation occurs when a population is separated, usually due to a geographical barrier, and natural selection changes the population so much the two groups could no longer interbreed.  Therefore, geographic isolation leads to reproductive isolation. ...
Evolution
Evolution

... atmosphere, according to the theory at that time. Used an electric spark to simulate a lighting strike that could have provided the energy to rearrange the atoms. Some amino acids and hydrocarbons formed. – Whether or not Miller/Urey’s mixture of gases accurately simulated the early atmosphere is de ...
< 1 ... 56 57 58 59 60 61 62 63 64 ... 149 >

Evidence of common descent



Evidence of common descent of living organisms has been discovered by scientists researching in a variety of disciplines over many decades and has demonstrated common descent of all life on Earth developing from a last universal ancestor. This evidence explicates that evolution does occur, and is able to show the natural processes by which the biodiversity of life on Earth developed. Additionally, this evidence supports the modern evolutionary synthesis—the current scientific theory that explains how and why life changes over time. Evolutionary biologists document evidence of common descent by making testable predictions, testing hypotheses, and developing theories that illustrate and describe its causes.Comparison of the DNA genetic sequences of organisms has revealed that organisms that are phylogenetically close have a higher degree of DNA sequence similarity than organisms that are phylogenetically distant. Further evidence for common descent comes from genetic detritus such as pseudogenes, regions of DNA that are orthologous to a gene in a related organism, but are no longer active and appear to be undergoing a steady process of degeneration from cumulative mutations.Fossils are important for estimating when various lineages developed in geologic time. As fossilization is an uncommon occurrence, usually requiring hard body parts and death near a site where sediments are being deposited, the fossil record only provides sparse and intermittent information about the evolution of life. Scientific evidence of organisms prior to the development of hard body parts such as shells, bones and teeth is especially scarce, but exists in the form of ancient microfossils, as well as impressions of various soft-bodied organisms. The comparative study of the anatomy of groups of animals shows structural features that are fundamentally similar or homologous, demonstrating phylogenetic and ancestral relationships with other organisms, most especially when compared with fossils of ancient extinct organisms. Vestigial structures and comparisons in embryonic development are largely a contributing factor in anatomical resemblance in concordance with common descent. Since metabolic processes do not leave fossils, research into the evolution of the basic cellular processes is done largely by comparison of existing organisms' physiology and biochemistry. Many lineages diverged at different stages of development, so it is possible to determine when certain metabolic processes appeared by comparing the traits of the descendants of a common ancestor. Universal biochemical organization and molecular variance patterns in all organisms also show a direct correlation with common descent.Further evidence comes from the field of biogeography because evolution with common descent provides the best and most thorough explanation for a variety of facts concerning the geographical distribution of plants and animals across the world. This is especially obvious in the field of insular biogeography. Combined with the theory of plate tectonics common descent provides a way to combine facts about the current distribution of species with evidence from the fossil record to provide a logically consistent explanation of how the distribution of living organisms has changed over time.The development and spread of antibiotic resistant bacteria, like the spread of pesticide resistant forms of plants and insects provides evidence that evolution due to natural selection is an ongoing process in the natural world. Alongside this, are observed instances of the separation of populations of species into sets of new species (speciation). Speciation has been observed directly and indirectly in the lab and in nature. Multiple forms of such have been described and documented as examples for individual modes of speciation. Furthermore, evidence of common descent extends from direct laboratory experimentation with the selective breeding of organisms—historically and currently—and other controlled experiments involving many of the topics in the article. This article explains the different types of evidence for evolution with common descent along with many specialized examples of each.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report