• 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
Millionaire Evolution
Millionaire Evolution

... Early stages in an embryo of a fish are similar to the early stages of human and pig embryos. An explanation for the similarity is that the … ...
Who WANTED to be a Millionaire ?
Who WANTED to be a Millionaire ?

... Early stages in an embryo of a fish are similar to the early stages of human and pig embryos. An explanation for the similarity is that the … ...
Topic 5 - Fillingham
Topic 5 - Fillingham

... Pentadactyl limbs: “penta” means five; “dactyl” means fingers ...
Unit 3 Evolution 2
Unit 3 Evolution 2

... shapes -- sharp or blunt -- might be selected for (i.e., both beak shapes effectively allow the birds to feed). However, a beak that is the average of the two shapes might not be particularly good at eating either seed, so this trait would be selected against. ...
Evo Notes 1b
Evo Notes 1b

... a) Endemic organisms on Islands resemble each other. b) Island organisms resemble the nearest mainland. ...
Chapter 5 study game
Chapter 5 study game

... a. Environmental changes kill weaker members of the species b. Overproduction provides food for stronger members of the species c. Stronger offspring kill weaker members of the species d. Helpful traits accumulate among surviving members of the species ...
EOCT Review
EOCT Review

... e. Recognize the role of evolution to biological resistance (pesticide and antibiotic resistance) ...
Anatomy & Embryology
Anatomy & Embryology

... the only criteria for grouping taxa Shared character – feature that all members of a group have in common – such as scales for reptiles or hair in mammals Derived character – a feature that evolved only within the group under consideration. Only birds have feathers, among living and extinct animals ...
Darwin`s Theory of Evolution
Darwin`s Theory of Evolution

... http://cas.bellarmine.edu/tietjen/Ec&Ev_Distance_learning/Evidence/evidence_pix.htm ...
EVOLUTION
EVOLUTION

...  Thomas Malthus-19th ...
Evolution Notes
Evolution Notes

... Charles Darwin (1809-1882) Sailed around the world 1831-1836 ...
LECTURES FOR ZOO 1010—CHAPTER 1
LECTURES FOR ZOO 1010—CHAPTER 1

... Origins of Darwinian Evolutionary Theory: Darwin and Wallace were first to establish evolution as a powerful scientific theory. They were not the first, however, to consider the idea of organic evolution. Pre-Darwinian Evolutionary Ideas—idea of life having had a long history o perpetual and irrever ...
Principles of Evolution What is evolution?
Principles of Evolution What is evolution?

... animals in a graduated sequence, beginning with mammals and working in order of decreasing complexity to to reptiles, fish, invertebrates, and eventually down to the polyps. This hierarchy represented the sequence of evolution, beginning with the simplest animals and proceeding, through small modifi ...
File
File

... ­ Molecular homologies​ are shared characteristics on the molecular level.   ex) finding ancestors with common DNA  ­Convergent evolution​ explains why distantly related species can resemble one another. Two  organisms developed similarities as they adapted to similar environmental challenges. The  ...
Accounting for Biodiversity: Evolution and Natural Selection A
Accounting for Biodiversity: Evolution and Natural Selection A

... environmental conditions faced by their ancestors. The result is a change in the genetic makeup of the population over time… time…a classical definition for evolution. Organisms appear well adapted to current conditions because these these resemble the conditions in which they evolved. The theory do ...
Outline 7: Evolution and the Fossil Record
Outline 7: Evolution and the Fossil Record

... fingers; apes and humans lack a tail; all tetrapods have similar limb bones. • Studied by comparative anatomy of living and fossil organisms. ...
variation
variation

... Darwin noticed a lot of variation in domesticated plants and animals. Artificial selection is the process by which humans select traits through breeding. What are some examples of humans using this process? ...
Tree of Life Questions and Answers
Tree of Life Questions and Answers

... Darwin claimed that just by looking at a tortoise, he could tell what Island it had come from based on its shell. If the tortoise had come from a watered Island, it had a rounded shell. If the tortoise had come from a dry Island, it had a peaked shell so that it could reach higher vegetation. 3. Wha ...
Biology: Evolution and Natural Selection Unit Test
Biology: Evolution and Natural Selection Unit Test

... Diagram showing evolutionary history: divergent evolution 5. Darwin’s theory of natural selection is also known as _survival of the fittest_______ and is the process by which __evolution occurs____ 6. What is the fossil record used for and how is it done? Determine age/ history Radioactive dating (c ...
The Theory of Evolution
The Theory of Evolution

... Who came up with evolution theory? • The most famous explanation of evolution was made by Charles Darwin • Theory 1st published in ‘On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life’ ...
Theory of Evolution
Theory of Evolution

... a common evolutionary origin Can be similar in arrangement, in function, or in both. ...
Study Guide - Southington Public Schools
Study Guide - Southington Public Schools

...  Describe Lamarck’s theory of acquired characteristics and how this theory was flawed.  Explain Darwin’s theory.  List ideas, writings and observations that influenced the formation of Darwin’s theory.  Explain how each of the following provides evidence of evolution: fossils, anatomy, embryolog ...
Lecture slides
Lecture slides

... Living species are different versions of ancestral species • Published his observation in a  book: On the Origin of Species • Suggested that as descendants of a remote ancestor spread into  various habitats (over millions and millions of years) they accumulate  diverse modifications. ...
Evolution
Evolution

...  An analogous structure is any body part that is similar ...
Mader/Biology, 11/e – Chapter Outline
Mader/Biology, 11/e – Chapter Outline

... 1. George Cuvier (1769–1832), a French vertebrate zoologist, was the first to use comparative anatomy to develop a system of classifying animals. a. He founded the science of paleontology—the study of fossils—and suggested that a single fossil bone was all he needed to deduce the entire anatomy of a ...
< 1 ... 96 97 98 99 100 101 102 103 104 ... 134 >

Transitional fossil



A transitional fossil is any fossilized remains of a life form that exhibits traits common to both an ancestral group and its derived descendant group. This is especially important where the descendant group is sharply differentiated by gross anatomy and mode of living from the ancestral group. These fossils serve as a reminder that taxonomic divisions are human constructs that have been imposed in hindsight on a continuum of variation. Because of the incompleteness of the fossil record, there is usually no way to know exactly how close a transitional fossil is to the point of divergence. Therefore, it cannot be assumed that transitional fossils are direct ancestors of more recent groups, though they are frequently used as models for such ancestors.In 1859, when Charles Darwin's On the Origin of Species was first published, the fossil record was poorly known. Darwin described the perceived lack of transitional fossils as, ""...the most obvious and gravest objection which can be urged against my theory,"" but explained it by relating it to the extreme imperfection of the geological record. He noted the limited collections available at that time, but described the available information as showing patterns that followed from his theory of descent with modification through natural selection. Indeed, Archaeopteryx was discovered just two years later, in 1861, and represents a classic transitional form between dinosaurs and birds. Many more transitional fossils have been discovered since then, and there is now abundant evidence of how all classes of vertebrates are related, much of it in the form of transitional fossils. Specific examples include humans and other primates, tetrapods and fish, and birds and dinosaurs.The term ""missing link"" has been used extensively in popular writings on human evolution to refer to a perceived gap in the hominid evolutionary record. It is most commonly used to refer to any new transitional fossil finds. Scientists, however, do not use the term, as it refers to a pre-evolutionary view of nature.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report