Biology Science

Difference between Metaphase 1 and Metaphase 2

Main Difference

The separation of a number of forms of chromosomes creates the between metaphase 1 and metaphase 2. The between metaphase 1 and metaphase 2 is that metaphase 1 has the similar number of chromosomes because the distinctive cells, whereas, metaphase 1 of meiosis has half the number of chromosomes.

Comparison Chart

Basis of DistinctionMetaphase 1Metaphase 2
DefinitionMetaphase 1 is the next state to prophase 1 when prophase 1 crossing over will get achieved, and tetrads switch within the path of a plan typically often known as metaphase plate.Stage the place bivalents organized on the metaphase plate and linked to the completely established meiotic spindle
Chromosomes PositionThe spindle fibers ship chromosomeschromatid turns into chromosomes after separation of spindle fibers
Number of ChromosomesEach pole receives half the number of chromosomesAlso, have the similar number of chromosomes nevertheless with a single chromatid
Bivalent RepletionTwo members of each bivalent repel each other and switch within the path of the opposite polesCentromere divides and two chromatids of each chromosome separate and switch within the path of the poles
Name Reason

Metaphase 1 stage current in meiosis 1 stage that’s why typically often known as metaphase 1

 

Metaphase 2 current in meiosis 1 that’s why typically often known as metaphase 2.

Metaphase 1

metaphase-1Metaphase 1 is the next state to prophase 1 when prophase 1 crossing over will get achieved, and tetrads switch within the path of a plan typically often known as metaphase plate. This metaphase plate is positioned between two poles of the cell. Here the spindle fibers are linked to the centromeres of each of the bivalents, and every kinetochores of each sister chromatid pair are then shifted in the direction of the similar pole. Consequently, every kinetochores bind to the spindle fibers to find out the similar pole. This is the true between mitosis and meiosis as members of the each chromosome pair separate from each other throughout the subsequent stage of meiosis that is anaphase 1. Two chromosomes and four chromatids in full from each guardian can set up on each side of the cell and produce the variations in chromosomal distribution in daughter cells after meiosis 1.

Metaphase 2

metaphase-plus-iiMetaphase 2 is the second stage in meiosis 2 the place each of the 2 daughter cells generated by the secondary gems cells. In this stage, the spindle as soon as extra attracts the chromosomes to the metaphase plate. Unlike metaphase 1 the place two kinetochores of centromere bind to spindle fibers on comparable poles, proper right here they bind from the opposite poles as happen throughout the case of mitotic metaphase and moreover related to the kinetochore-microtubule coming from that pole. This, in the end, separates the sister chromatids of each chromosome in the midst of the anaphase 2. According to Harvard CyberBridge, “Metaphase 2 occurs after the prophase 2 and before anaphase 2 during overall meiosis 2 processes.”

Key Differences

  • In metaphase 1, each pole receives half the number of chromosomes whereas in metaphase 2 have the similar number of chromosomes nevertheless with a single chromatid.
  • In metaphase 1, chromosomes are launched by the spindle fibers. In metaphase 2, after separation each chromatid turns into chromosome.
  • In metaphase 1 of meiosis 1, homologous chromosomes are separated whereas in metaphase 2 of meiosis 2, sister chromatids are separated.
  • In metaphase 1, two members of each bivalent repel each other and switch within the path of the opposite poles. In metaphase 2, the centromere divides and two chromatids of each chromosome separate and switch within the path of the poles.
  • Metaphase 1 stage current in meiosis 1 stage that’s why typically often known as metaphase 1, whereas metaphase 2 current in meiosis 1 that’s why typically often known as metaphase 2.
  • In metaphase 1, pairs of chromosomes are organized on the metaphase plate whereas which will be modified to metaphase 2 the place solely chromosomes are organized on the metaphase plate.
  • The plane of metaphase plate in metaphase 1 is perpendicular as compared with the plane of the metaphase plate in metaphase 2.
  • In metaphase 1, chromosomes tetrads aligned on metaphase plate whereas, in metaphase 2, chromosomes organized on metaphase plate as jus like throughout the mitosis with solely sister chromatids.

Video Explanation

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