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If meiosis did not occur in sexually reproducing organisms, the chromosome number would double in each generation. Sexual reproduction results in new combinations of genetic traits.
Wiki User
∙ 9y ago
Wiki User
∙ 13y agoif meiosis did not occur in sexually reproducing organisms then the fetus is a male
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Why all organisms show variation?
Variations arise due to recombinations(gene rearrangements) ,mutations etc.The former is the principal source of variation in sexually reproducing organisms and the latter is the source of variation in asexual organisms.According to Darwin variation arises due to chance since all the above mentioned process occur in nature spontanuously all organisms show variation
Does evolution occur at the level of the organisms?
No, organisms die.Evolution is the change in allele frequency over time in a population of organisms.
How is meiosis related to genes?
Meiosis allows a cell to form into 4 cells (by meiosis 1 (which is literally mitosis) and meiosis 2 (mitosis without DNA replication)) in meiosis 1, the cells exchanges DNA information between homologous pairs, this allows genes to be transferred and creates 4 unique and distinct cells. segragation of alleles occur too.
What would happen if there was zero variation between all of the organisms on earth?
Evolution cannot occur.
Natural selection cannot occur without what?
Variations within a population. Variations mean traits that only certain individuals have that give the individual a greater or lesser chance of reproducing.
Does meiosis occur in all growing organisms?
No, meiosis does not occur in all growing organisms. Meiosis is a specialized form of cell division that occurs in sexually reproducing organisms to produce gametes (eggs and sperm). Organisms that reproduce asexually, such as bacteria and some plants, do not undergo meiosis.
In what types of organisms does meiosis occur?
Animals, plants, some algae, most fungi, and some protists.
What will happen if meiosis did not occur in sexually reproducing organisms?
If meiosis did not occur then the chromosome number would double each generation, and the cell could not survive with this increasingly larger number of chromosomes.
How do variation occur in asexually reproducing organisms?
mutation of the DNA is the only way asexually reproducing organisms can obtain variations in their population
What advantage does meiosis give to organisms that reproduce sexually?
Meiosis occurs because it provides a way for genetic variability, since it would be unfavorable for an organism's offspring to have the same weaknesses that it did, as opposed to binary fission or mitosis. In mitosis, the parent and daughter cell will be identical if no genetic mutations occur (which most cells have built-in self-repair mechanisms).
What problem would occur in future generations if meiosis did not precede the formation of gametes?
If gametes were not produced then there would be no way of reproducing so the human species would die out.
What would happen if meiosis doesn't occur in sexual reproduction?
Meiosis is the most important biological process in all advanced plants and animals. If this process did not occur, the production of the sex cells would not occur. This is also referred to as a type of chromosome reduction division. Hence, that is how the sexual cells (gametes) have only half the number of chromosomes as the other body cells of that organism. So if meiosis didn't occur, sexual reproduction could not occur.
When does duplication of chromosomes occur?
when does the duplication of chromosomes occur?
Why all organisms show variation?
Variations arise due to recombinations(gene rearrangements) ,mutations etc.The former is the principal source of variation in sexually reproducing organisms and the latter is the source of variation in asexual organisms.According to Darwin variation arises due to chance since all the above mentioned process occur in nature spontanuously all organisms show variation
Why must the life cycle of sexually reproducing species alternate between haploid and diploid stages?
Meiosis maintains the normal diploid number by halving the number to make the gametes and then allowing the diploid number to be restored through fertilization. For example in humans: Germ cells undergo meiosis --> Sex reproduction 2n germ cells --> 1n gametes --> 2n fertilization
What process is absolutely necessary for sexual reproduction to occur in a life cycle but is not required for organisms that only reproduce asexually?
Meiosis is needed in sexual reproduction.It is not need in growth,recoveries etc.
Does mitosis or meiosis use bacteria to divide?
yes its how they reproduceBacteria do not have nucleus. So they cannot reproduce sexually. Just multiplication of cells occur
