Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 42.1, Problem 2R
Summary Introduction
To review:
The severity of negative impact of global climate change on a sexually and asexually reproducing species of animal.
Introduction:
Reproduction in animals can take place by two means—asexual and sexual. In asexual reproduction, the genetically similar offspring or clones of the parent organism is produced, whereas in sexual reproduction, genetically varied offspring are produced as they inherit half the number of genes from one parent and a half from the other one.
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From an evolutionary standpoint, why is sexual reproduction advantageous for the continuation of a species?
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Life: The Science of Biology
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- All of the following are correct about asexual reproduction EXCEPT a) it can create numerous offspring quickly b) the offspring are genetically identical to the parent c) it enables animals living in isolation to produce without a mate d) it is advantageous when the environment is changing and the organisms is stressed.arrow_forwardDescribe a situation in which asexual reproduction might be more likely than sexual reproductionarrow_forwardhow does sexual reproduction produce more complex offspring, produce a greater number of offspring, enhances the genetic variability, produce more evolutionary fit individual and Increases the survival rate of the species?arrow_forward
- Describe how genes are transmitted in sexually reproducingspeciesarrow_forwardWhy Do So Many Animals Reproduce Sexually Rather than Asexually?arrow_forward(a) Distinguish between asexual and sexual reproduction. Why isvegetativereproduction also considered as a type of asexual reproduction?(b) Which is better mode of reproduction : Sexual or Asexual? Why?arrow_forward
- Asexual reproduction passes on 100% of the parent's genes but it is relatively rare. What are the advantages of sexual vs asexual reproduction? In some cases, species are hermaphrodites to reduce the difficulty in finding mates. What is the difference between simultaneous and sequential hermaphrodites? Why is "selfing" relatively rare?arrow_forwardIf an organism reproduces very freely by asexual means, is there any advantage to its also reproducing sexually?arrow_forwardWhat is a likely evolutionary advantage of sexual reproduction over asexual reproduction?arrow_forward
- Most species reproduce sexually. Some species are entirely asexual, while others can reproduce in both modalities. a) Why is asexual reproduction so rare? b) What can we learn about the factors that maintain sexual reproduction from studying species that can reproduce both sexually and asexually?arrow_forwardWhy are the offspring of a male and a hermaphrodite more variablethan the offspring of a self-reproducing hermaphrodite?arrow_forwardbriefly describe one benefit an organism that uses asexual reproductionarrow_forward
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