Thekey difference在配子孢子和二元减数分裂之间gametic meiosis is the meiosis that occurs during the formation ofmale and female gametes而孢子减数分裂是在此期间发生的减数分裂sporogenesisand zygotic meiosis is the meiosis that occurs in thezygote.
Most life cycles include bothhaploid and diploidstages. In order to return from the diploid stage to the haploid stage, meiosis is the key. Meiosis is one of the two types of cell divisions. Diploid cells divide by meiosis and produce haploid cells which contain only one set of chromosomes. From one cell, four daughter cells are produced by meiosis. Most importantly, during meiosis, genetic recombination takes place. Hence, the daughter cells are genetically different from the parent cell. Genetic recombination is an important evolutionary process. Meiosis occurs via two consecutive meiosis processes: meiosis I and meiosis II. During the life cycle of an organism, meiosis takes place in order to produce gametes, spores and also for zygote division.
内容
1.Overview and Key Difference
2.什么是配子减数分裂
3.什么是孢子减数分裂
4.What is Zygotic Meiosis
5.Similarities Between Gametic Sporic and Zygotic Meiosis
6。Side by Side Comparison – Gametic vs Sporic vs Zygotic Meiosis in Tabular Form
7。概括
什么是配子减数分裂?
Gametes are the male and female sexual cells of organisms. They are haploid cells containing only one set of chromosomes. Female gametes carry half of the mother chromosomes while male gametes carry half of the father’s chromosomes. They fuse with each other in order to make a diploid zygote. Therefore, meiosis should take place to make haploid cells from diploid cells. Meiosis will make sure that gametes receive only one set chromosomes. The meiosis which takes place during the formation of the gametes is known as gametic meiosis.
什么是孢子减数分裂?
孢子减数分裂是在孢子发生过程中发生的减数分裂细胞分裂。孢子形成是指产生孢子的过程。通常,植物,藻类和真菌会产生孢子以繁殖。因此,孢子形成是其生命周期期间的一个阶段。当它们形成孢子时,减数分裂细胞分裂发生。孢子减数分裂是有性繁殖的重要事件,有助于完成其生命周期。在某些生物体中,孢子发生在产生无性孢子时伴有有丝分裂。在某些生物体中,需要减数分裂和有丝分裂的孢子形成才能完成其复杂的生命周期。
In sporic meiosis, a diploid spore mother cell, which resides within the sporangium, undergoes meiosis. It results in four haploid spores. In heterosporous organisms, two types of spores are produced via sporic meiosis: microspores and megaspores. In flowering plants, microspores are produced in the anthers of flowers. In conifers, sporic meiosis takes place in microsrobili and megastrobili when producing microspores and megaspores.
什么是合子减数分裂?
合子是由两个异性细胞的融合形成的二倍体细胞。在某些生物体(例如细胞粘液霉菌和鞭毛藻)中,合子经历了减数分裂以产生单倍体个体。因此,合子减数分裂是指减数分裂的合子分裂,以产生形成单倍体个体的单倍体细胞。简而言之,合子减数分裂是从合子形成单倍体细胞的细胞分裂类型。在这些生物体,尤其是在真菌和绿藻中,多倍型是单倍体。因此,一旦形成了二倍体合子,就应该进行减数分裂以产生单倍体孢子。然后,那些单倍体孢子通过有丝分裂分裂,以产生多细胞单倍体个体。
What are the Similarities Between Gametic Sporic and Zygotic Meiosis?
- All three types of meiosis produce haploid cells.
- They are very important processes in order to complete their life cycles.
What is the Difference Between Gametic Sporic and Zygotic Meiosis?
配子减数分裂发生在配子是formed while sporic meiosis takes place when the spores are formed for sexual reproduction. Meanwhile, in zygotic meiosis, the zygote undergoes meiosis. So, this is the key difference between gametic sporic and zygotic meiosis. Gametic meiosis is important in order to produce a diploid cell after fertilization and then a multicellular diploid organism. Sporic meiosis is important in order to produce haploid sexual spores for sexual reproduction mainly in plants. Zygotic meiosis is important for the formation of multicellular haploid individuals such as fungi and green algae. Thus, this is the functional difference between gametic sporic and zygotic meiosis.
以下是配子孢子和合子减数分裂之间的差异的汇总表,并排比较。
概括– Gametic Sporic vs Zygotic Meiosis
每个物种的基因组中都有独特的染色体。这些染色体带有个体的遗传信息。为了维持世代相传染色体数量的一致性,发生了减数分裂。由于减数分裂,细胞获得了总染色体的一半。减数分裂有助于有性繁殖。此外,减数分裂有助于产生单倍体个体。根据减数分裂发生的阶段,可以将其定为配子,孢子和合子减数分裂。配子减数分裂发生在配子形成期间,而孢子减数分裂发生在孢子形成期间,二肠癌发生在单倍体细胞形成期间。因此,这总结了配子孢子和合子减数分裂之间的差异。
Reference:
“Sporogenesis.” Wikipedia, Wikimedia Foundation, 25 Dec. 2019,Available here.
“14.5: Life Cycles.” Biology LibreTexts, Libretexts, 16 July 2020,Available here.
Image Courtesy:
1. “Sporic meiosis” By Sporic meiosis.png: Original uploader was Menchi at en.wikipedia.Derivative work: Rehua (talk) – This file was derived from: Sporic meiosis.png:(CC BY-SA 3.0)viaCommons Wikimedia
2. “Microspore-formation” By Emmanuel Boutet – Own work(CC BY-SA 3.0)viaCommons Wikimedia
3. “Meiosis diagram” By Marek Kultys – Own work(CC BY-SA 3.0)viaCommons Wikimedia
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