Most eukaryotic organisms use sexual reproduction as their primary means of perpetuating their species. Gametes are formed via meiosis. However, some species primarily reproduce via asexual means. Reproduction is accomplished via mitosis. Aspen trees most commonly reproduce by such asexual methods of cloning. What are the advantages and disadvantages of reproduction by asexual means? Why do some species reproduce in this manner? Why don't all species?

Most eukaryotic organisms use sexual reproduction as their primary means of perpetuating their species. Gametes are formed via meiosis. However, some species primarily reproduce via asexual means. Reproduction is accomplished via mitosis. Aspen trees most commonly reproduce by such asexual methods of cloning. What are the advantages and disadvantages of reproduction by asexual means? Why do some species reproduce in this manner? Why don't all species?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter11: Meiosis: The Cellular Basis Of Sexual Reproduction

Section: Chapter Questions

Problem 2ITD

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Many simple eukaryotes reproduce by asexual reproduction, using only mitosis. Assuming the environment is stable and the organism is well adapted to its environment, why is this a better form of reproduction for these organisms?
From an evolutionary standpoint, why is sexual reproduction advantageous for the continuation of a species?
What distinguishes asexual reproduction from sexual reproduction? What benefit does sexual reproduction confer to species? What is the value of genetic diversity? Why? In what ways does sexual reproduction contribute to diversity? Describe the unpredictability of meiotic partner selection, random distribution, and crossover.
Why do most species eventually evolve sexual reproduction?
Some organisms—for example, certain fungi—reproduce asexually when the environment is favorable and sexually when the environment becomesunfavorable. What might be the evolutionary advantage of sexual reproduction with the associated process of meiosis during unfavorable conditions?
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.
Why do biologists believe that isogamy is the ancestral state? Given isogamy as a starting point, explain the evolution of anisogamy.
Explain why the following statement is false: Sexual reproduction is the only mechanism for genetic change.
In eukaryotic reproduction two haploid gametes fuse together to produce a diploid zygote which will grow into a new living organism with characteristics from both parents. true or false?
List three reasons why individuals that result from sexual reproduction do not have the same DNA instructions as their parents.
What is a likely evolutionary advantage of sexual reproduction over asexual reproduction?
Why do diploid organisms that reproduce via sexual reproduction even bother with meiosis? What is the point of this complex and energetically expensive process?