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Sex is the combining and mixing of _during the formation of offspring. It involves two main processes: (1) halves the number of chromosomes during gamete formation, and (2) restores the original chromosome number as two gametes fuse to form a zygote. Self-fertilization occurs in Lorganisms when the two gametes fused in fertilization come from the incorporates individual. Although this is still sexual reproduction (because it and _), it yields offspring that are lacking in genetic variation. Sexual reproduction may have evolved because sex creates new genetic within by mixing parental alleles into novel offspring while at the same time enabling the purging of alleles. The Red Queen effect is used to explain the evolution of_ , because sexually reproducing organisms are likely to fare better in the continual evolutionary arms races that can arise between species (e.g., between or and their

Sex is the combining and mixing of _during the formation of offspring. It involves two main processes: (1) halves the number of chromosomes during gamete formation, and (2) restores the original chromosome number as two gametes fuse to form a zygote. Self-fertilization occurs in Lorganisms when the two gametes fused in fertilization come from the incorporates individual. Although this is still sexual reproduction (because it and _), it yields offspring that are lacking in genetic variation. Sexual reproduction may have evolved because sex creates new genetic within by mixing parental alleles into novel offspring while at the same time enabling the purging of alleles. The Red Queen effect is used to explain the evolution of_ , because sexually reproducing organisms are likely to fare better in the continual evolutionary arms races that can arise between species (e.g., between or and their

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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1.1 Evolution of Sex Sex is the combining and mixing of, _during the formation of offspring. It involves two main halves the number of chromosomes during gamete formation, and (2) restores the original chromosome number as two gametes fuse to form a zygote. processes: (1). Self-fertilization occurs in organisms when the two gametes fused in fertilization come from the individual. Although this is still sexual reproduction (because it incorporates and _), it yields offspring that are lacking in genetic variation. Sexual reproduction may have evolved because sex creates new genetic within by mixing parental alleles into novel offspring while at the same time enabling the purging of alleles. The Red Queen effect is used to explain the evolution of. ,because sexually reproducing organisms are likely to fare better in the continual evolutionary arms races that can arise between species (e.g., between or and their
Transcribed Image Text:1.1 Evolution of Sex Sex is the combining and mixing of, _during the formation of offspring. It involves two main halves the number of chromosomes during gamete formation, and (2) restores the original chromosome number as two gametes fuse to form a zygote. processes: (1). Self-fertilization occurs in organisms when the two gametes fused in fertilization come from the individual. Although this is still sexual reproduction (because it incorporates and _), it yields offspring that are lacking in genetic variation. Sexual reproduction may have evolved because sex creates new genetic within by mixing parental alleles into novel offspring while at the same time enabling the purging of alleles. The Red Queen effect is used to explain the evolution of. ,because sexually reproducing organisms are likely to fare better in the continual evolutionary arms races that can arise between species (e.g., between or and their
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