But what's interesting over here, or what's different over here is, is that the fission can only happen along this plane, along It also undergoes reproduction by fission. Anyways, so if you're take an organism, which has that structure like this, this is also unicellular. Thing, which when you hit, it does that (whip lashing) sound. If you're wondering what a whip is, whip is that leather Your textbook calls it, a whip-like structure. But in some other unicellular organisms, we will find that fission Okay, so one kind of fission is this irregular kind of fission that can happen along any axis. So as long, when it comes to amoeba and some other unicellular organisms, we will find that there is, they can split, or fission can happen, along any particular axis. The amoeba can also split along this axis. It could have also split along this axis. It could have elongated this way and finally split like Okay, now could this amoeba, could this amoeba splitĪlong some other axis, say, along this axis? The answer is yes. The fission is happening along this axis, right? This axis, let me draw How fission takes place, we can further classify fission That the pattern itself split into two new babies. And the second thing to seeĪbout fission, especially, is that you can see To your mother or father because you have a mix of their DNA. Will not be identical to their parents, like in humans. But in sexual reproduction, there is a DNA mixing that happens. And so the DNA over here is exactly same as the DNA over here, unless there is some kind of mutation. We just have one parent, only it's DNA gets copied. We say they are clones of the parents, in all kinds of asexual Things to notice is in asexual reproduction, we will find that the offsprings are Now, since two brand new amoebas are born from a single parent, this qualifies as asexual reproduction. After the copy of the DNA has been made the nucleus starts spitting into two, as you can see over here. Eventually, as time passes by, we will see that the nucleus First of all, we will see that its nucleus starts to elongate like this. When it's ready to reproduce, we will see some changes happening. So let's take the example of amoeba, the most famous unicellular Has happened, right? And therefore, fission, or cell division is a kind of reproductionįor unicellular organisms, not for multicellular, butįor unicellular organisms. One cell, only one cell, now imagine if that splits into two, we will now have two individuals. Unicellular organisms, organisms that just have Multicellular organisms, like in you and me, cellĭivision just makes more cells inside the body, so that's Now at first you might be saying, "Hey, this is just cell division, right? Why do we call this asĪ reproduction method?" Well, think about it, in Fission is cell splitting, that's important, a cell splitting into two or more. Okay, so what exactly is fission? Fission is basically aĬell splitting into two. And so in this particular video, we will focus only on theįirst type called fission. Them in great detail, and I can't do that in one single video. Their names right now, because I wanna talk about Asexual reproduction canīe broadly classified into five types. And a lot of animalsĪnd bacteria and plants undergo asexual reproduction. But in asexual reproduction, we get offsprings from just one parent. Like in human beings, a male and female unite to give babies. Made from two parents, one male and a female, In contrast, sexual reproduction is where offsprings are Trends in microbiology, 27 (9), 781–791.Reproduction is the art of making new babies, or At the Heart of Bacterial Cytokinesis: The Z Ring. Despite billions of years of bacterial evolution, the Z ring is nearly universal among bacteria that have a cell wall and divide by binary fission.ĭu, S., & Lutkenhaus, J. This is homologous to tubulin, the cytoskelotal element that forms the microtubules in eukaryotes. FtsZ protein once again gets dispersed in the cytoplasm ofīacterial cytokinesis is mediated by the Z ring, a cytoskeletal element formed by the polymerization of FtsZ protein. When septum formation is complete, the cell pinches in two, forming Plasma membrane and other cell wall materials will be The formation of septum that divides the cell. Septum to produce a new cell wall between the dividing cells or Z ring directs What is the role of Z ring in binary fission?įtsZ ring is to recruit other cell division proteins to the Commonly Asked JAMB Chemistry Past Questions on Separation Techniques
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