BIOLOGY W/CONNECT >IP<
11th Edition
ISBN: 9781259910487
Author: Raven
Publisher: MCG CUSTOM
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Textbook Question
Chapter 25, Problem 3U
Homoplastic structures
a can Involve convergence of completely unrelated developmental pathways.
b. always ate morphologically distinct.
c. are produced by divergent evolution of homologous structures.
d. are derived from the same structure In a shared common ancestor.
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Evolutionary Evidence: Write the letter of the correct definition in the blank space on the left.
______ vestigial structure a. remains of dead organisms
______ homologous structures b. structures in different species which perform the same function, have similar appearance and structure but are not evolved together
______ analogous structures c. structures that are derived from a common
______ fossil record d. in the early stages of development dogs, pigs, and humans resemble one another
______ embryology e. structures that have reduced in size because they no longer serve an important function
Scientists compare the structures of a chicken embryo and a human embryo at the same stage of development. They find that both vertebrates have similar shapes and structures, including the presence of gill slits and tails. How is this comparison of the embryos used as supporting evidence of evolution?
A. The similarities suggest that chickens and humans are the direct descendants of modern day fish with tails and gill slits.
B. The similarities suggest that vertebrates passthrough each of the adult stages of their evoluntionary history as they develop.
C. The similarities suggest that vertebrates can undergo genetic changes during development that lead to the evolution of new species
D. The similarities suggest that chickens and humans descend from ancestors with genes that code for the development of tails and gill slits
Assume the common ancestor was non-venomous, had non-jointed limbs, antennae, and 10 legs. Assume that all evolutionary changes in these traits are shown.
a) What traits does Species C have?
b) What traits does species F have?
Chapter 25 Solutions
BIOLOGY W/CONNECT >IP<
Ch. 25 - Heterochrony is a. the alteration of the spatial...Ch. 25 - Vast differences in the phenotypes of organisms as...Ch. 25 - Homoplastic structures a can Involve convergence...Ch. 25 - Hox genes are a. found in both plants and animals....Ch. 25 - The Brachyury and Thx5 in vertebrates and the Ap3...Ch. 25 - Which of the following statements about Pax6 is...Ch. 25 - Which of the following statements about TbxS is...Ch. 25 - Prob. 8UCh. 25 - Transcription factors are a. genes. b. sequences...Ch. 25 - Independently derived mutations of the CTC gene in...
Ch. 25 - Prob. 1ACh. 25 - Prob. 2ACh. 25 - The Eda allele that causes reduced armor...Ch. 25 - Prob. 4ACh. 25 - The paired-like homeodomain transcription factor 1...Ch. 25 - From the chapter on evolution of development it...Ch. 25 - Phenotypic diversity among major groups of...Ch. 25 - Critique the argument that eyes have multiple...Ch. 25 - Prob. 5SCh. 25 - Having read all of this chapter return to the clam...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Many species look similar as embryos. What causes them to appear different as adults? Why does the study of development give insights into evolutionary relationships?arrow_forwardThe bones in the front fins of whales and the bones in the human arm evolved from a common ancestor but carry out different functions. This is an example of A. homologous structures. B. vestigial structures. C. analogous structures. D. embryonic structures.arrow_forwardA genetic change that caused a certain Hox gene to be expressedalong the tip of a vertebrate limb bud instead of farther backhelped make possible the evolution of the tetrapod limb.This type of change is illustrative of(A) the influence of environment on development.(B) paedomorphosis.(C) a change in a developmental gene or in its regulation thataltered the spatial organization of body parts.(D) heterochronyarrow_forward
- EVOLUTION LINK What is the common ground between evolutionary biologists and developmental biologists who have adopted the perspective known as Evo Devo?arrow_forwardHow can evolutionary relationships among organisms be determined by comparing embryonic development? A. Embryos of fish and mammals share no similarities B. Embryos retrace their ancestral stages during embryonic development C. Embryos of more closely related organisms show greater similarities in development D. Embryos that develop inside eggs lack similarities to placental mammalsarrow_forwardGene duplications during vertebrate evolution have led toA. the control of body segmentation in mice by four copies of Hox genes.B. the abundance of somites in vertebrate embryos.C. the loss of other genes.D. a long development period of feathers in the chicken embryo.E. All of the abovearrow_forward
- What is embryology? A. The science of the development of embryos from fertilization to birth B. Microevolution C. A multicellular organism that primarily undergoes extensive and rapid growth D. Macro evolutionarrow_forwardSeveral very distantly related species (e.g., bats, birds, insects) have evolved the capability of flight. The most recent common ancestor of insects and vertebrates likely lived over 500 million years ago and was flightless. This independent evolution of flight in multiple, distantly related taxa is an example of what evolutionary process/pattern? a. Evolutionary reversal b. Convergent evolution c. Speciation d. Synapomorphyarrow_forwardCan convergent (or parallel) evolution of similar morphology in two different lineages involve DNA sequence evolution in different parts of the same developmental gene? Explain how.arrow_forward
- 1)The wings of an insect and bird have similar structures and purposes, but different ancestors; therefore, the wings of both are ______ structures. * A. Homologous B. Analogous C. Identical D. Vestigialarrow_forwardIn the late 1800's, a biologist studying animal embryos coined the phrase, "ontogeny recapitulates phylogeny", meaning that the physical development of an animal embryo (ontogeny) seemed to retrace the changing form of the species during its evolutionary history (phylogeny). Why would embryonic development retrace evolutionary steps?arrow_forwardAll mammals have tailbones and muscles for moving a tail. Even humans have a reduced tailbone and remnant tail-twitching muscles, though these features have no apparent usefulness. These traits in humans would best be described as (a) convergent structures. (b) fossil evidence. (c) evidence from biogeography. (d) vestigial traits.arrow_forward
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