Biology

Difference between Metaphase 1 and Metaphase 2

Main difference

The separation of various forms of chromosomes creates between metaphase 1 and metaphase 2. The between metaphase 1 and metaphase 2 is that metaphase 1 has the same number of chromosomes because distinctive cells, while metaphase 1 of meiosis has half the number. of chromosomes.

Comparative chart

Basis of distinction Metaphase 1 Metaphase 2
Definition Metaphase 1 is the next state of prophase 1 when the crossover of prophase 1 will be achieved and the tetrads will change within the path of a plan generally known as a metaphase plate. Scene of the bivalent locus organized on the metaphase plate and linked to the fully established meiotic spindle
Chromosome position Spindle fibers send chromosomes the chromatid becomes chromosomes after the separation of the fibers from the spindle
Number of chromosomes Each pole receives half the number of chromosomes. Also, they have the same number of chromosomes, but with only one chromatid.
Bivalent replenishment Two members of each bivalent repel and change within the path of opposite poles. The centromere divides and two chromatids on each chromosome separate and change within the path of the poles.
Name Reason Current from metaphase 1 stage to meiosis stage 1, which is why it is often referred to as metaphase 1 Metaphase 2 current in meiosis 1, which is why it is often referred to as metaphase 2.

Metaphase 1

Metaphase 1 is the next state to prophase 1 when the crossover of prophase 1 will be achieved, and the tetrads will change within the path of a plan generally known as a metaphase plate. This metaphase plate is placed between two poles of the cell. Here, the spindle fibers are attached to the centromeres of each of the bivalents, and all the kinetochores of each pair of sister chromatids move in the direction of the similar pole. Consequently, all the kinetochores join the fibers of the spindle to find the similar pole. This is the case between mitosis and meiosis, as the members of each pair of chromosomes separate from each other during the later stage of meiosis which is anaphase 1.

Metaphase 2

Metaphase 2 is the second stage in meiosis 2, where each of the 2 daughter cells generated by the secondary gem cells. At this stage, the spindle once again attracts the chromosomes to the metaphase plate. Unlike metaphase 1, where two kinetochore from the centromere join the spindle fibers at comparable poles, right here they join from opposite poles, as in the case of mitotic metaphase and also related to the kinetochore-microtubule that comes from that pole. This, in the end, separates the sister chromatids of each chromosome in the middle of anaphase 2. According to Harvard CyberBridge, “Metaphase 2 occurs after prophase 2 and before anaphase 2 during the general processes of meiosis 2.”

Key differences

  1. In metaphase 1, each pole receives half the number of chromosomes, while in metaphase 2 it has the same number of chromosomes, but with only one chromatid.
  2. In metaphase 1, the chromosomes are released by the fibers of the spindle. In metaphase 2, after separation, each chromatid becomes a chromosome.
  3. In metaphase 1 of meiosis 1, homologous chromosomes separate, while in metaphase 2 of meiosis 2 sister chromatids separate.
  4. In metaphase 1, two members of each bivalent repel and change within the path of opposite poles. In metaphase 2, the centromere divides and two chromatids from each chromosome separate and change within the path of the poles.
  5. Metaphase 1 stage current in meiosis stage 1, this is why it is often referred to as metaphase 1, while metaphase 2 is current in meiosis 1, which is why it is generally referred to as metaphase 2.
  6. In metaphase 1, the chromosome pairs are arranged on the metaphase plate, while those that will be modified at metaphase 2, where only the chromosomes are arranged on the metaphase plate.
  7. The plane of the plate in metaphase in metaphase 1 is perpendicular compared to the plane of the plate in metaphase in metaphase 2.
  8. In metaphase 1, the chromosome tetrads lined up on the metaphase plate, whereas in metaphase 2, the chromosomes arranged on the metaphase plate as in all mitosis with sister chromatids only.

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