Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 19, Problem 5TY
Summary Introduction
Introduction:
If organisms share a common ancestor they can often exhibit structures present in their ancestral forms. In some organisms such structures can be identified in developmental stages. They appear in some developmental stage of the embryo and then disappear. This field is called as developmental homology since similarity between developmental structures of one species and normal structure of another species is analyzed. Presence of these structures is strong evidence in support of evolution.
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Chapter 19 Solutions
Principles of Biology
Ch. 19.1 - Prob. 1TYKCh. 19.1 - Prob. 2TYKCh. 19.1 - The phrase an organism evolves is incorrect....Ch. 19.1 - Prob. 1BCCh. 19.2 - Explain how geography played a key role in the...Ch. 19.2 - Prob. 2CCCh. 19.2 - Prob. 3CCCh. 19.2 - Prob. 1TYKCh. 19.2 - Homologous traits show similarities because the...Ch. 19.3 - What is the frequency of pink flowers in a...
Ch. 19.3 - Prob. 1TYKCh. 19.3 - Prob. 2TYKCh. 19.4 - Lets suppose the climate on an island abruptly...Ch. 19.4 - Prob. 2CCCh. 19.4 - Prob. 3CCCh. 19.4 - Prob. 4CCCh. 19.4 - Prob. 1TYKCh. 19.4 - Prob. 2TYKCh. 19.4 - Prob. 3TYKCh. 19.5 - How does the bottleneck effect undermine the...Ch. 19.5 - Prob. 1TYKCh. 19.5 - Prob. 2TYKCh. 19.5 - Prob. 1BCCh. 19.6 - How does migration affect the genetic compositions...Ch. 19.6 - Prob. 1BCCh. 19.6 - Prob. 1TYKCh. 19.6 - Populations that experience inbreeding may also...Ch. 19 - Prob. 1TYCh. 19 - An evolutionary change in which a population of...Ch. 19 - Homology occurs because different species occupy...Ch. 19 - Prob. 4TYCh. 19 - Prob. 5TYCh. 19 - Prob. 6TYCh. 19 - Prob. 7TYCh. 19 - Prob. 8TYCh. 19 - Prob. 9TYCh. 19 - The micro-evolutionary factor most sensitive to...Ch. 19 - Prob. 1CCQCh. 19 - Prob. 2CCQCh. 19 - A principle of biology is that populations of...Ch. 19 - Prob. 1CBQCh. 19 - Prob. 2CBQ
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- 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 slitsarrow_forwardA bat wing and a cat paw have different functions but similar bones and development. Which term best describes the bat wing and cat paw (both are mammals)? Question options: Embryological structures Analogous structures Homologous structures Genealogical structures Which of the following is probably the best explanation for the fact that Antarctic penguins cannot fly, although there is evidence that millions of years ago their ancestors could Question options: The Antarctic home of penguins is flat and barren; therefore there is no place to fly. Ancestral penguins without large wings were better able to swim and feed in the water; therefore they passed their genes for shorter wings structure onto their offspring. Ancestral penguins did not use their wings for long periods of time; therefore today’s penguins have only tiny, nonfunctional wings. The cold and wind of Antarctica make flight impossible; therefore penguins that live…arrow_forwardRead the article on the bat's wings (link below). The author seems to disagree that evolution is involved in the bat wing's development. Do you agree or disagree? Why?https://www.icr.org/article/how-bat-get-its-wings/arrow_forward
- Vertebrate embryos all follow a very similar developmental process. Which statement could explain this similarity? All vertebrates develop a backbone that protects the spinal cord. All vertebrates live in similar environments which require the same adaptations. All vertebrates inherit the same sequence of DNA from their parents. All vertebrates require the same nutrients during embryological development.arrow_forwardWhereas most sarcopterygiians are oviparous (lay eggs), some sharks have viviparity (live birth) similar to that seen in mammals. This shared characteristic is an example of _______. a homologous trait an analogous trait divergent evolution a synapomorphy an ancestral traitarrow_forwardThe images below exhibit Y-5 molars. The left comes from a chimpanzee and the other is a zoomed-in image of Y-5 molars in a human. Why do these primates share the trait for Y-5 molars? Mark the best answer. Group of answer choices Unclear, cannot determine from the information given. Both inherited this trait from their common ancestor, which also had Y-5 molars. Convergent evolution, since both separately evolved Y-5 molars to adapt to dietary pressures. Random mutations, since having Y-5 molars is abnormal in these species of primate.arrow_forward
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