what is asexual reproduction?

Question

is asexual reproduction good or bad for plants and animals or even human beings? what are its advantages and disavantages?

Answer 1

Asexual reproduction is a form of reproduction which does not involve meiosis, ploidy reduction, or fertilization. A more stringent definition is agamogenesis which refers to reproduction without the fusion of gametes. Asexual reproduction is the primary form of reproduction for single-celled organisms such as archaea, bacteria, and protists. Many plants and fungi reproduce mostly asexually as well. While all prokaryotes reproduce asexually (without the formation and fusion of gametes), mechanism for lateral gene transfer such as conjugation, transformation and transduction are sometimes likened to sexual reproduction
Types of asexual reproduction
Binary fission
Budding
Spore formation
Vegetative reproduction
Fragmentation
Parthenogenesis
Apomixis and nucellar embryony
A number of invertebrates and some less advanced vertebrates are known to alternate between sexual and asexual reproduction, or be exclusively asexual. Alternation is observed in a few types of insects, such as aphids (which will, under favourable conditions, produce eggs that have not gone through meiosis, essentially cloning themselves) and the cape bee Apis mellifera capensis (which can reproduce asexually through a process called thelytoky). A few species of amphibians and reptiles have the same ability (see parthenogenesis for concrete examples). A very unusual case among more advanced vertebrates is the female turkeys' ability to produce fertile eggs in the absence of a male. The individual produced is often sickly, and nearly always male. This behaviour can interfere with the incubation of eggs in turkey farming.

Answer 2

Asexual reproduction is basically a reproduction method that does not need exchange of genetic material between 2 partners. The offspring are genetically identical to its parent. It was used extensively among small organisms (e.g.: microscopic organism), as it is a fast means of reproduction. It saves time and energy finding a mate and having genetic exchange. This is needed especially when conditions are favorable and an organism wishes to colonize the area fast before others. But because their genetic material are all similar, when a crisis happened, their resistance are all similar and hence all might die together. Such a crisis includes abiotic (environment [e.g. increase heat]) or biotic (from other organism [e.g. virus]) factors. Also, another problem is that all genetic defects (if any) will be passed on to their offspring.

While in sexual reproduction, since there is exchange of genetic information between any 2 partners, the resulting offspring will be genetically different from both parents. The offspring will have a difference in resistance level compared to its parent (might be better of worse), hence, when crisis strikes, there might stand a chance for some genetically stronger individuals to survive.

Virus attack larger organisms more often, and they are known to mutate too. Once they mutate till they are very effective a particular species' individual. If that species does not use sexually reproduction, its offspring will be all genetically similar and the virus would very efficiently affect all the other species' individuals as their resistance is all the same.

As for its disadvantage, it is the opposite of asexually method (e.g., not fast, waste energy and time).

Now, to answer the question... Larger organisms tend to use sexual reproduction as they are so large compared to microorganism that they are more often attack by abiotic and biotic crisis (GENERALLY more often biotic, while asexual is GENERALLY more often of abiotic). They are large enough that parasitic organisms can reside in them.

Thus, larger organisms like plants and human being use sexually reproduction for the advantage of having some of its species to survive a crisis.

Answer 3

Well..asexual reproduction is a reproduction where the organism does not need couple or mate to reproduce(individual reproduction)and does not involving reproductive cell(sperm and ovum).Their advantage is..the animal or plant which undergo asexual rep.,can produce new organism from only one parent.Their disadvantage is,the new organism have exactly the same characters with their parents,including undesirable characters.

Answer 4

Asexual reproduction is a form of reproduction which does not involve meiosis, ploidy reduction, or fertilization. A more stringent definition is agamogenesis which refers to reproduction without the fusion of gametes. Asexual reproduction is the primary form of reproduction for single-celled organisms such as archaea, bacteria, and protists. Many plants and fungi reproduce mostly asexually as well. While all prokaryotes reproduce asexually (without the formation and fusion of gametes), mechanism for lateral gene transfer such as conjugation, transformation and transduction are sometimes likened to sexual reproduction.[1]


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Answer 5

see asexual reproduction cannot occur in human being and animals.in asexual reproduction only one sex is involved and the offspring is exactly like the parent
bacteria,and other lower level living organisms reproduce by asexual method in following ways:
1.fission:binary fission and multiple fission
2.budding
3.sporulation
4.regenneration
5.vegetative propogation:
a)cutting
b)layering
c)grafting

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Answer 6

Human beings dont do asexual reproduction only some animals and plants do it humans do sexual reproduction

Answer 7

asexual reproduction is reproducing with only 1 parent. each organism can reproduce either sexually or asexually. we reproduce sexually, along with most animals and plants, but bacteria reproduce asexually- where i parent cell turns into 2 daughter cells

Answer 8

robyn is not correct. Plants do have sex, just in a different way. All flowering plants produce pollen which is picked up by bees. Some of the pollen clings to their legs and is transported to the next flowering plant of the samy species. Pollen in plants is equivalent to sperm in animals.

Non-flowering plants have other ways of pollinating. Corn, for instance, has the cob low on the plant and the tassels which hold the pollen on the top of the plant. The wind blows the pollen around and it lands on the silk sticking out of the cob. Corn needs to be planted in close proximity to other corn plants or the wind blows the pollen away.

Answer 9

asexual reproduction means multiplication of an organism without sexual contact. I think, as long as the organism reproduce, it will be fine.

Answer 10

it is when a female doesnt need a male to reproduce they have "both parts" so thechnically they r not male or female like a pee plant it can fertilize itself so it is asexual but it can also cross polinate wich is sexual reproduction