http://digfir-published.macmillanusa.com/life11e/life11e_ch42_1.htmlChapter Introduction57e3f36e757a2e781a000000
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_2.htmlkey concept 42.1 Asexual Reproduction Is Efficient but Limits Genetic Variability
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_3.htmlAsexual reproduction limits genetic diversity
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_4.htmlBudding and regeneration produce new individuals by mitosis
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_5.htmlParthenogenesis is the development of unfertilized eggs
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_7.htmlkey concept 42.2 Sexual Reproduction Involves the Union of Haploid Egg and Sperm
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_8.htmlGametogenesis produces eggs and sperm
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_9.htmlFertilization is the union of sperm and egg
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_10.htmlSpawning and mating behaviors get eggs and sperm together
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_11.htmlSome individuals can function as both male and female
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_12.htmlThe evolution of vertebrate reproductive systems parallels the move to land
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_13.htmlAnimals with internal fertilization are distinguished by where the embryo develops
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_15.htmlkey concept 42.3 Male Sex Organs Produce and May Deliver Sperm
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_16.htmlSemen is the product of the male reproductive system
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_17.htmlThe penis and the scrotum are the male external genitalia
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_18.htmlMale sexual function is controlled by hormones
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_20.htmlkey concept 42.4 Female Sex Organs Produce Eggs and Nurture Embryos
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_21.htmlOvarian cycles produce mature eggs
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_22.htmlThe uterine cycle prepares an environment for a fertilized egg
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_23.htmlHormones control and coordinate the ovarian and uterine cycles
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_24.htmlFSH receptors determine which follicle ovulates
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_25.htmlIn pregnancy, hormones from the extraembryonic membranes take over
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_26.htmlBreast feeding delays the return of the ovarian cycle
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_27.htmlChildbirth is triggered by hormonal and mechanical stimuli
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_28.htmlBirth as well as reproduction is timed
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_30.htmlkey concept 42.5 Fertility Can Be Controlled
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_31.htmlHumans use a variety of methods to control fertility
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_32.htmlReproductive technologies help solve problems of infertility
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_34.htmlInvestigating Life57e3f36e757a2e781a000000
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_35.htmlChapter Summary
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http://digfir-published.macmillanusa.com/life11e/life11e_ch42_36.htmlApply What Youâve Learned
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