Key Difference – HoloblasticvsMeroblasticCleavage
全体裂解称为整个胚胎细胞cleavage while meroblastic cleavage is referred to partial embryonic cell cleavage。这是关键区别在整体和绿色细胞裂解之间。
Cleavage is defined as the division of cells during the early embryonic stage. This occurs once the fertilization step is completed and theZygoteis formed. Cleavage is initialized with the activation of cyclin defendant kinase. Two types of cleavages are found depending on the amount of yolk present in the egg. They are holoblastic cleavage or meroblastic cleavage.
CONTENTS
1。概述和关键差异
2。什么是整体裂解
3。什么是meroblastic裂解
4。整体和绿色细胞裂解之间的相似之处
5。并排比较 - 整体裂解以表格形式
6.Summary
什么是整体裂解?
整体裂解定义为在胚胎细胞中发生的一种裂解,不含大量的蛋黄(中度至稀疏的蛋黄)。这种类型的裂解发生在分离的细胞中。分离经纪人是指蛋黄在哺乳动物卵的细胞质中的分布。
整体裂解可能是四种主要的裂解类型。双侧全泡,径向整体,旋转整体和螺旋状整体。Bilateral holoblastic cleavageis said to be the first type of cleavage that bisects the zygote into two halves; left and right.径向裂解其特征在于每个上层的囊泡的排列直接在下一个下层的囊泡上,从而导致圆杆周围的径向对称性到胚胎的极轴。
During旋转整体裂解,,,,the normal first division that takes place along the meridional axis and then rotated in 90 degrees and gives the other cells.螺旋状裂解在胚胎的极轴周围以螺旋形式出现。
什么是meroblastic裂解?
蛋白细胞裂解被定义为一种裂解,该裂解发生在受精卵细胞中,并具有大量的蛋黄,并经历了部分裂解。梅型裂解可以分为两个部分。盘状裂解和表面裂解。
During盘状裂解,开发的裂解沟并不能穿透蛋黄。这种类型的裂解通常可以在诸如含有的单体,鸟类,爬行动物和鱼类等物种中发现telolecithal eggs。
Duringsuperficial cleavage,,,,the process of mitosis takes place without cytokinesis. Superficial cleavage results in a polynuclear cell. Here, the yolk is positioned at the center of the egg cell where the nuclei get migrated to the periphery of the egg.
What are the Similarities Between Holoblastic and Meroblastic Cleavage?
- 整体细胞和绿色细胞裂解都是两种类型的裂解。
- 两者都发生在胚胎阶段。
- 两者均由细胞周期蛋白依赖性激酶复合物触发。
- Both cleavages end with the formation of the blastula.
What is the Difference Between Holoblastic and Meroblastic Cleavage?
全体细胞与梅尔细胞裂解 |
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整体裂解定义为在胚胎中包含中等或稀疏的卵子中蛋黄的一种裂解。 | Meroblastic cleavage is defined as a type of cleavage that takes place in a fertilized egg cell with a large amount of yolk and undergoes partial cleavage. |
有丝分裂 | |
No mitosis occurs in holoblastic cleavage. | 有丝分裂takes place in meroblastic cleavage. |
鸡蛋中的蛋黄 | |
Smaller amount of yolk is present in eggs that show holoblastic cleavage. | 卵显示出蛋白细胞裂解的卵中存在更多的蛋黄。 |
Type of Cleavage | |
整体裂解会导致完整的裂解。 | 蛋白细胞裂解会导致部分裂解。 |
亚型 | |
双侧全体细胞,径向整体,旋转整体和螺旋状整体是整体裂解的类型。 | Discoidal cleavage and superficial cleavage are types of meroblastic cleavage. |
同义词 | |
Holoblastic cleavage – Total cleavage and complete cleavage are synonyms of holoblastic cleavage. | 裂解不完全的裂解或部分裂解是绿色裂解的同义词。 |
例子 | |
大多数氘代表和原抑制剂,例如两栖动物,哺乳动物,棘皮动物,annelids,line虫,线虫等都显示出整体裂解。 | Monotremes, avians, reptiles show meroblastic cleavage. |
摘要 - 整体vsMeroblasticCleavage
劈理的定义是细胞的分裂takes place during early embryology. It is of two types; holoblastic cleavage and meroblastic cleavage. This depends on the amount of yolk present in the egg. Holoblastic cleavage results in complete cleavage while meroblastic cleavage results in partial cleavage. The final result of both cleavages is a blastula. This is the difference between holoblastic cleavage and meroblastic cleavage.
参考:
1.“全体裂解。”stuce.com,study.com。在这里可用
2。“Cleavage.” Cleavage.在这里可用
3.“ meroblastic裂解。”stuce.com,study.com。在这里可用
图片提供:
1。’Spiral cleavage in Trochus’By Morgan Q. Goulding(CC由2.5)通过下议院维基梅迪亚
2.’等于c.orosco的平等乳沟 - 自己的作品(公共领域)下议院维基梅迪亚
Rabecca Tembosays
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