EBK BIOLOGY
5th Edition
ISBN: 8220100667978
Author: Maier
Publisher: PEARSON
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Chapter 12, Problem 4LTB
Summary Introduction
Introduction:
Reproductive isolation can be defined as when the environment may carry out an outside barrier to the reproduction, such as a mountain range or river. Pre-fertilization reproductive barriers disturb the jasmine crosses. Reproductive barriers are commonly divided into pre and post-fertilization barriers depending on whether fertilization happens normally.
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- Some organisms are capable of asexual or sexual reproduction. Under favorable conditions, reproduction proceeds asexually. When conditions become more stressful reproduction switches to a sexual mode. Why? Question options: Sexual reproduction is simple and more rapid allowing larger numbers of offspring to be produced. Sexual reproduction requires two separate individuals, who can mutually provide nutrient support during stress. Sexual reproduction produces individuals with new combinations of recombined chromosomes increasing diversity. Asexual reproduction requires more energy.arrow_forwardListed are the following characteristics. Classify them using Venn Diagramarrow_forwardAll of the following are requirements for successful external fertilization except for one. Which one is not a requirement? A moist environment. Large, energy-rich gametes. Synchronization of gamete release. Lock and key recognition between gametes of the same species.arrow_forward
- Which of the following is a pre - zygotic barrier that can cause reproductive isolation ? Two fish who breed at different times of the year . The fetus of the hybrid of two fish species cannot survive long enough to emerge from the egg . The hybrid offspring of two fish species cannot reproducearrow_forwardWhich reproductive strategy is more likely to result in offspring with traits that are well-suited to specific and unchanging environmental conditions? Group of answer choices Asexual Sexual Both sexual and asexual Neither sexual and asexualarrow_forwardWhich of the following is true regarding where mitosis and meiosis occur within multicellular organisms? Meiosis occurs only in gamete-forming cells; all cells can perform mitosis. Meiosis occurs only in gamete-forming cells; mitosis is only for specialized dividing cells. Mitosis occurs only in gamete-forming cells; all cells can perform meiosis. Mitosis occurs only in gamete-forming cells; meiosis is only for specialized dividing cells.arrow_forward
- Which of the following is an advantage of asexual reproduction? (choose all correct answers) decreased potential for adaptation because of genetically uniform populations reproduce without a mate increased genetic diversity offspring have optimal genetics for current environment produce many offspring quicklyarrow_forwardyou can choose more than onearrow_forwardOf the following, which is an example of a postzygotic barrier? O Due to incompatible interactions between inherited genes, a hybrid fetus is unable to develop, and is aborted. O One species mates in spring, while another mates in summer. O A female spider of one species does not respond to the mating display of a male of a closely related species. O Cell surface proteins of one species eggs prevent sperm from another species attaching, so the sperm cannot fertilize it.arrow_forward
- Which types of environments/conditions would favor sexual reproduction over asexualreproduction in a species? (select all that apply) Group of answer choices A species that is rapidly expanding into new environments. A species that has accumulated many deleterious mutations An environment that is stable and favorable An environment where a pathogen of a species is rapidly diversifyingarrow_forwardWhich reproductive strategy leads to genetic variance in offspring, rather than simply maintaining genetic continuity? Fragmentation O Asexual reproduction Sexual reproduction Buddingarrow_forwardWhich of the isolating mechanisms listed in Table 26.1 have partlyevolved between apple and hawthorn host races of Rhagoletispomonella, the apple maggot fly?arrow_forward
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