EBK BIOLOGY:SCIENCE F/LIFE
6th Edition
ISBN: 9780134819167
Author: BELK
Publisher: PEARSON
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Chapter 11, Problem 6LTB
Summary Introduction
Introduction:
The shared evolutionary ancestry can be reflected by similarity in biological molecules such as all mammals contain DNA as their genetic material. Two or more species can contain the same gene as they have inherited from a common ancestor.
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"Natural selection is the only mechanism of evolution." Please correct this statement in a meaningful way
Match the terms in the left column to the appropriate blanks on the right. Terms can be used once, more than once, or not at all.
shared trait
distantly
dependent
similar
analogous
homologous
different
common ancestor
closely
independent
Convergent evolution is the independent evolution of similar features in different lineages. It
occurs when distantly related organisms obtain a shared trait trait due to analogous needs.
Such resemblance is said to be homologous. Therefore, species with traits that appeared
convergently do not have a common ancestor
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Chapter 11 Solutions
EBK BIOLOGY:SCIENCE F/LIFE
Ch. 11 - What observations did Darwin make on the Galapagos...Ch. 11 - Prob. 2LTBCh. 11 - Prob. 3LTBCh. 11 - In science, a theory is a(n) ___________. educated...Ch. 11 - The theory of common descent states that all modem...Ch. 11 - Prob. 6LTBCh. 11 - Prob. 7LTBCh. 11 - Even though marsupial mammals give birth to live...Ch. 11 - Prob. 9LTBCh. 11 - Which of the following taxonomic levels contains...
Ch. 11 - Prob. 1AAATBCh. 11 - DNA is not the only molecule that is used to test...Ch. 11 - Look at the tree you generated for question 2. It...Ch. 11 - Search for the biology learning standards...Ch. 11 - Humans and chimpanzees are more similar to each...Ch. 11 - The science that you learned in this chapter has...
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- THE STICKLEBACK FISH: An excellent model for understanding evolution in the wild at many levels Lateral plates develop front to back MOLECULAR GENETIC LEVEL Oceanic MORPHOLOGICAL & DEVELOPMENTAL LEVEL POPULATION LEVEL Selection on the forms of the plate gene varies throughout a stickleback life in fresh waters. Freshwater Freshwater fish don't develop as many plates Younger fish without the low form of the gene survive better June November Three regions of a stickleback chromosome have been linked to the loss of lateral plates and one lateral plate gene has been identified. Older fish with the low form of the gene survive better ENSEarrow_forwardHow would you summarize your understanding of this topic now? What species of hominin do you think had enough of these fundamental qualities that you would call them human? What traits are present in this species that lead you to this conclusion? There are no right or wrong answers, just talk about the traits you think are key to being human and what species has enough of these that you think of them as human. please someone answer this is Anthroarrow_forwardPART I. THE THEORY OF EVOLUTION. DIRECTIONS: Complete the paragraph about evidence of evolution by choosing the correct word provided below. biogeography fossils homologous molecular vestigial The theory of evolution states that modern species have descended from ancestral species through evolution and speciation. It is supported by a large body of evidence such as found in geologic strata. These are remnants of ancient life that provide evidence for the evolutionary change through now-extinct forms that led to modern species. Modern species retain certain structures that arose from a common ancestor structures. Other remnants of what was once useful to the ancestors are or the findings of the original distribution of related species across the Earth the connections between ancient evidence, DNA sequences have also shed light on the occurrence of such as structures. Furthermore, we can infer from the landmasses. Finally, through some of the mechanisms of evolution.arrow_forward
- True or False: The presence of vestigial structures in humans (such as tailbones) provides support for an evolutionary hypothesisarrow_forwardWhich of the following is FALSE about homology? Homology refers to traits inherited from a common ancestor Homology is inferred when sequences are more alike than by random chance Homologous traits refer to having the same structure and function Homology is the most parsimonious explanation for sequence similarity All of the above are TRUEarrow_forwardHomo floresiensis describe the fossil/ DNA etc. and where it comes from. Describe what makes this species different from previously discovered species. Describe one way it changes our understanding of human evolution.arrow_forward
- Fossils of an extinct giant sloth were found to be similar to a smaller species of sloth presently inhabiting the same region. This similarity could be best explained on the basis of which of the following? * Modern forms have evolved from earlier forms Independent assortment no answer Principle of use and disuse Inheritance of acquired traits Which of the following organisms is most closely related to each other? * MITOCHONDRIAL DNA CODES Organism DNA Codes American black bear ATT GGA GCA GÁC TIA Giant panda ATT GGC AСТ ААТ СТА Red panda АTT GGA AСТ ААС СТ Raccoon АТC GGA TсТ ААС СТ American black bear and giant panda Red panda and raccoon no answer Giant panda and red panda O Raccoon and American black beararrow_forwardExplain how evidence from modern human genomes supports a recent African origin for Homo sapiens. How have findings from ancient DNA altered the simple out-of-Africa model? this question is from a past paper i found, can it please be answered in extensive detail and in essay form as i feel it would benefit my personal revision to be able to answser a question of this nature about the topic.arrow_forwardWhy the genetic diversity of humans in Africa is greater than that elsewhere in the worldarrow_forward
- Common descent with modification implies that all species can trace their ancestory back to a shared ancestral organism True Falsearrow_forwardBoth humans and chimpanzees have large brains and well developed eyes. Chimpanzees and humans are also clearly close relatives. These similarities between chimpanzees and humans could best be described as; Homologous traits The products of many years of convergent evolution Homoplasies Analogous traitsarrow_forwardparagraph (more than a few sentences) thoroughly explaining each question.arrow_forward
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