Asexual and Sexual Reproduction
Reproduction is extremely important for the survival and evolution of a species.Through
reproduction, an individual passes on its genes to the next generation.
Sexual Reproduction
Most species reproduce sexually in male and female pairs. Each parent in a sexually reproducing pair passes on half of its genes to its offspring. The mix of genes that results makes each new generation(the offspring) different from the previous generation (the parents). This genetic variation, or difference between the generations, provides a very important advantage to sexually reproducing organisms: the ability to adapt more quickly
to changing conditions in their environment. The better-adapted individuals live
long enough to reproduce sexually and pass on more of their genes to the next
generation. Thus, they have a greater influence on the genetic makeup of the entire species. This process is known as natural selection.
Asexual Reproduction
Relatively few species reproduce asexually,or in a way that does not involve male and female partners. In contrast to sexual reproducers, every organism that reproduces asexually passes on its entire set of genes to the next generation. These species have a
few distinct advantages over those that mate in pairs. Since it does not need a
sexual partner, a lone individual can establish a new population in a new territory.
However, in populations created by asexual reproduction, no individual has much of a survival or reproductive advantage over any other individual. This is because they are all
so genetically similar. It also means that it will take much longer for these
populations to evolve in response to change going on around them, which makes
them especially vulnerable to diseases or other natural disasters that can wipe them out.
Glossary
genetic variation:genetic diversity in a species or group as a result of new gene combinations produced during reproduction
natural selection: the survival and successful reproduction of the organisms that are best suited to their environment; the process that drives evolution
population:a group of organisms of the same species that live in the same area or habitat
Writing Assignment
Type a two-page paper on one of the following topics. Be sure to include all references. The references are NOT part of the two pages. You will submit this assignment in on Managebac. Please make sure you check your assignment through Turnitin.
1. What are the benefits and drawbacks of sexual and asexual reproduction and the species that practice them? Cite specific examples to support your ideas.
2. In what ways do you think offspring born from one parent might differ from those born from two parents? Cite specific examples to support your ideas.
If you would like more information about sexual and asexual reproduction to complete your paper, check out the following Web sites:
Sexual vs. asexual reproduction: scientists find sex wins
The Advantage of Sex
Evolution of Sexual Reproduction
reproduction, an individual passes on its genes to the next generation.
Sexual Reproduction
Most species reproduce sexually in male and female pairs. Each parent in a sexually reproducing pair passes on half of its genes to its offspring. The mix of genes that results makes each new generation(the offspring) different from the previous generation (the parents). This genetic variation, or difference between the generations, provides a very important advantage to sexually reproducing organisms: the ability to adapt more quickly
to changing conditions in their environment. The better-adapted individuals live
long enough to reproduce sexually and pass on more of their genes to the next
generation. Thus, they have a greater influence on the genetic makeup of the entire species. This process is known as natural selection.
Asexual Reproduction
Relatively few species reproduce asexually,or in a way that does not involve male and female partners. In contrast to sexual reproducers, every organism that reproduces asexually passes on its entire set of genes to the next generation. These species have a
few distinct advantages over those that mate in pairs. Since it does not need a
sexual partner, a lone individual can establish a new population in a new territory.
However, in populations created by asexual reproduction, no individual has much of a survival or reproductive advantage over any other individual. This is because they are all
so genetically similar. It also means that it will take much longer for these
populations to evolve in response to change going on around them, which makes
them especially vulnerable to diseases or other natural disasters that can wipe them out.
Glossary
genetic variation:genetic diversity in a species or group as a result of new gene combinations produced during reproduction
natural selection: the survival and successful reproduction of the organisms that are best suited to their environment; the process that drives evolution
population:a group of organisms of the same species that live in the same area or habitat
Writing Assignment
Type a two-page paper on one of the following topics. Be sure to include all references. The references are NOT part of the two pages. You will submit this assignment in on Managebac. Please make sure you check your assignment through Turnitin.
1. What are the benefits and drawbacks of sexual and asexual reproduction and the species that practice them? Cite specific examples to support your ideas.
2. In what ways do you think offspring born from one parent might differ from those born from two parents? Cite specific examples to support your ideas.
If you would like more information about sexual and asexual reproduction to complete your paper, check out the following Web sites:
Sexual vs. asexual reproduction: scientists find sex wins
The Advantage of Sex
Evolution of Sexual Reproduction
