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In the context of the cell cycle, mitosis is the part of the division process in which the DNA of the cell's nucleus is split into two equal sets of chromosomes. The great majority of the cell divisions that happen in your body involve mitosis.
Species are separated from one another by prezygotic and postzygotic barriers, which prevent mating or the production of viable, fertile offspring. Speciation is the process by which new species form. It occurs when groups in a species become reproductively isolated and diverge.
- There are now evidence showing that Homo sapiens interbred with Neanderthals and produced offspring....Hybridization is known to happen between what are generally accepted to be different species — sometimes this leads to new species, other times som...
- Why haven't dogs undergone speciation yet? What major changes must one breed undergo in order that t...Dogs are currently undergoing speciation. However, because they have only recently have split into many breeds, it will take much more time for the...
- why is polyploidy more common in plants than in animals? this article says it's because plants "are ...They are constantly influenced by variable factors of their environment which may cause more changes in their karyotype. Moreover, most plant speci...
- Suppose that two groups of animals are reproductively separated due to a mechanical barrier, but if ...No, because the offspring is able to reproduce which means that the two parents are of the same species. Plus, just because organisms live in diffe...
- What is the barrier to zygote production for the Antelope squirrels (besides the Grand Canyon)? For ...There may not be a barrier — I did a brief look online, but didn't find anything relevant and don't know whether anyone has tried making hybrids of...
- How do scientists normally determine if two organisms are of the same species?Organisms belong to the same species if they can interbreed to produce fertile offspring. Species are separated by prezygotic and postzygotic barri...
- I heard that dogs evolved from wolf species that were in that area. So dogs in Australia evolved fro...All domestic dogs evolved from the grey wolf species. Australian dogs were brought to Australia by humans. African dogs were brought to Africa by h...
- So what are the major differences between speciation in plants and speciation that takes place in an...Speciation in plants may happen faster just like genetical engineering is much easier to conduct in plants. Plants are polyploid but can reproduce...
- If small fishes maybe cichlids, live in the same lake but at different depths which cues differentia...Allopatric? But they eventually can swim apart and change depths?
- What can speed up speciation process?The biggest factor is with the rate of creating offspring. The shorter the time between generations the faster that speciation can occur.
Each branch point (also called an internal node) represents a divergence event, or splitting apart of a single group into two descendant groups. At each branch point lies the most recent common ancestor of all the groups descended from that branch point.
Describe the different forms that DNA takes before and during cell division in a eukaryotic cell. Identify the four phases of mitosis in an animal cell, and summarize what happens during each phase. Explain what happens during cytokinesis in an animal cell.
A phylogenetic tree, also known as a phylogeny, is a diagram that depicts the lines of evolutionary descent of different species, organisms, or genes from a common ancestor. Phylogenies...
Speciation is a lineage-splitting event that produces two or more separate species. Imagine that you are looking at a tip of the tree of life that constitutes a species of fruit fly. Move down the phylogeny to where your fruit fly twig is connected to the rest of the tree.
Nov 18, 2022 · As the name suggests, the parent body is split into pieces. Each piece develops into a mature, complete individual identical to its parent. Fragmentation is found to occur in fungi such as yeasts and mushrooms. Plants such as ferns, mosses, and cyanobacteria also reproduce by fragmentation.
