Why do distantly related species (such as ostriches, emus, and rheas) invery different places sometimes share similar traits? *O They evolved from a recent common ancestorThey can travel very long distances in a short period of timeThe environments they live in are similar, so similar traits are selectedHumans have caused them to evolve through artificial selectionLenovo->esc&@%23$44671etytabfgn mshiftaltctrl

The organisms change over a period of time because of “natural selection”. It also depends on the…

Why do distantly related species (such as ostriches, emus, and rheas) very different places sometimes share similar traits? * O They evolved from a recent common ancestor They can travel very long distances in a short period of time O The environments they live in are similar, so similar traits are selected

Why do distantly related species (such as ostriches, emus, and rheas) very different places sometimes share similar traits? * O They evolved from a recent common ancestor They can travel very long distances in a short period of time O The environments they live in are similar, so similar traits are selected

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter18: Organizing Information About Species

Section: Chapter Questions

Problem 6SQ: Through _______, a body part of an ancestor is modified differently in different lines of descent....

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Through _______, a body part of an ancestor is modified differently in different lines of descent. a. homologous evolution b. morphological convergence c. adaptive divergence d. morphological divergence
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?
resentation/d/thGQUjqTbWbvuj425jU5lzXxy303Sd58V1acYG-145yk/edit#slide-id.gcdc5ff1ec7_0_154 he... -Fit @ 2 OFMovies | Watch C... Copy of Copy of Evolution - Cladogram Construction Chordates DA mat Slide Arrange Tools Extensions Help R 1 S W F2 8 X # Fish 3 Frog Lizard Click to add speaker notes E Bird D B Welcome - Blackb.... The more organisms included in the cladogram, the more complicated it becomes. A chart may be useful for organizing shared traits. 6. Complete the chart indicating characteristics shared for each group. X indicates group has the trait, O for groups that do not have the trait. (The 4-chambered heart column has been completed for you.) Rabbit F3 0₁\ 80 Human C $ 4 Ơ R F % Vertebrae 5 V Background Layout Theme FMovies | Watch R... F5 T G ^ 6 B Tetrapod (4 limbs) MacBook Air F6 123Movies - Watc... Y H & 7 Claws/Nails N Transition F7 U * 00 8 4 chambered. heart * DII F8 T M O O O X X Login X ( 9 K F9 Voxco Agent - Log... 0 < Hair / Fur ) 0 G La fascinante hist... F10…
aterials Spirochaetes are free-living, anaerobic bacteria that contain spiral-shaped cells. Nematodes are roundworms that are incredibly diverse and, as a group, have adapted to survive in all environments. Which of the following statements accurately describes the DNA of both groups? * pdates ades embers nferences The spirochaete genome is smaller than the nematode genome. Q Online Nematode DNA is circular. sela Spirochaete chromosomes are composed of just DNA while nematode chromosomes also include specialized proteins. on Periods 1 and 2 eriods MP1, Highschool chool MP3, Spirochaete DNA is linear. MP4 Operons are clusters of genes that are regulated as a group. They can be characterized as either repressible or inducible. What is the main difference between the two? * d Thu Fri INTL 1
56) The human body contains structures that are needed for survival, or in the case of vestigial structures, were needed for survivalL Wisdom teeth, seen here, are vestigial third molars. Human ancestors had larger jaws with more teeth. Over thousands of years, man no longer needed the third molar, and they became the source of dental problems rather than an aid in survival How does this vestigial structure support the theory of natural selection? ht ing The size of man's cranial cavity evolved. With increased cranial cavity size, the size of man's brain also grew. This resulted in a smaller jaw and no 14 A) room for the third molars. Agriculture and the use of fire changed what and how man ate and need for these teeth diminished over time. Jaw size and shaped evolved and there was insufficient room for the third molars. he B) The climate on Earth changed from very cold to tropical The tropical climate on Earth lead to a change in the diet of humans and that lead to the need for sharp,…
Recent reconstructions of evolutionary history are often dependenton assigning divergence in terms of changes in amino acid ornucleotide sequences. For example, a comparison of cytochromec shows 10 amino acid differences between humans and dogs,24 differences between humans and moths, and 38 differencesbetween humans and yeast. Such data provide no information asto the absolute times of divergence for humans, dogs, moths, andyeast. How might one calibrate the molecular clock to an absolutetime clock? What problems might one encounter in such acalibration?
tes es Snakes evolved from ancestors who had the ability to walk. Some snakes, in fact, still have small pelvis and leg bones that are remnants from this ancestor. What ers rences are these called? * nline Vestigial structure Homologous structure Sympatric structure riods 1 and 2 Molecular homology P1, Highschool ol MP3, 4 O O O O
of this =rab or ditions ionary escen- se or 5. Describe two examples of vestigial structures that you can find among the Caminalcules. These are structures that have been reduced to the point that they are virtually useless. Ear muscles and the tail bones are examples of vestigial structures in our own species. Explain how vestigial structures provide clues about a species' evolutionary past. Illustrate your argument with vestigial structures found in humans or other real species.
WRITE ABOUT A THEME: Organization You have seenmany examples of how form fits function at all levels of thebiological hierarchy. However, we can imagine forms thatwould function better than some forms actually found innature. For example, if the wings of a bird were not formedfrom its forelimbs, such a hypothetical bird could fly yet alsohold objects with its forelimbs. In a short essay (100–150words), use the concept of “evolution as tinkering” to explainwhy there are limits to the functionality of forms in nature.
Full or partial limblessness has evolved many times invertebrates (snakes, lizards, manatees, whales). Do youexpect the mutations that occurred in the evolution oflimblessness to be in the coding or noncoding sequencesof toolkit genes? Why?
Species Embryo (A-F) Describe the Anatomical Changes from Early to Late Stages Human Chicken Rabbit Tortoise Salamander В Fish A Guide Questions: 1. Look again at the six embryos in their earliest stages. Describe the patterns you see. What physical similarities exist between each of the embryos? 2. Does this suggest an evolutionary relationship? Explain how these embryos can be used as evidence of a common ancestor between each of these six organisms.
DtFoundatio X * Mind Tap - Cengage Learning Ô https://ng.cengage.com/static/nb/ui/evo/index.html?deploymentld%3D598638229454168914629742 * CENGAGE MINDTAP Chapter 13 Quiz: Processes of Evolution Chapter Quiz: Processes of Evolution Total points: --/15 Within a diploid animal species, what are potential sources of variation in shared, heritable traits? Select all that apply. O Mutations in the germ line | Meiosis | Mitotic division of somatic cells O Fertilization O Genetic engineering of somatic cells carch