what are the difference between metaphase 1 and 2?
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What is the difference between Metaphase 1 and Metaphase 2? In Metaphase I, the 'pairs of chromosomes' are arranged on the Metaphase plate while, in the Metaphase II, the 'chromosomes' are arranged on the metaphase plate. In Metaphase I, the spindle fibers get attached to two centromeres of each homologous chromosome.
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The cell cycle has two major phases: interphase and the mitotic phase (Figure 1). During interphase, the cell grows and DNA is replicated. During the mitotic phase, the replicated DNA and cytoplasmic contents are separated, and the cell divides. Figure 1.
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Prophase I is the beginning phase of Meiosis I while Prophase II is the beginning phase of Meiosis II. There is a long interphase before Prophase I, whereas Prophase II occurs without an interphase. ... The pairing of homologous chromosomes occurs in Prophase I, whereas such process cannot be seen in Prophase II.
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Mitosis consists of one stage whereas meiosis consists of two stages. Mitosis produces diploid cells (46 chromosomes) whereas meiosis produces haploid cells (23 chromosomes). Mitosis produces two identical daughter cells whereas meiosis produces four genetically different daughter cells.
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45) What is a major difference between mitosis and meiosis I in a diploid organism? A) Sister chromatids separate in mitosis, while homologous pairs of chromosomes separate in meiosis I.
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The Metaphase II is found in meiosis II, and it is very similar to the Metaphase found in mitosis I. ... In Metaphase I, the 'pairs of chromosomes' are arranged on the Metaphase plate while, in the Metaphase II, the 'chromosomes' are arranged on the metaphase plate.
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Both Meiosis I and II have the same number and arrangement of phases: prophase, metaphase, anaphase, and telophase. Both produce two daughter cells from each parent cell.
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Meiosis I reduces the ploidy level from 2n to n (reduction) while Meiosis II divides the remaining set of chromosomes in a mitosis-like process (division). Most of the differences between the processes occur during Meiosis I.
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The main difference between prophase 1 and 2 is that genetic recombination occurs through crossing overs and the “Chiasmata” formation during prophase 1 whereas no genetic recombination is noticed at the prophase 2.
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The cell cycle has two general phases. Interphase is the preparation phase before cell division, and mitosis the phase in which the dividing happens. ... This makes sense since centromeres are part of chromosomes and chromosomes are S phase is the part of interphase when DNA duplication takes place.
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Meiosis 1. starts with a diploid cell, separates homologous chromosomes, and produces 2 haploid cells. Meiosis 2. separates sister chromatid, each cell produced in meiosis 1 is divided into 2, so produces 4 haploid cells which will then mature to sperm or egg cells.
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Both Meiosis I and II have the same number and arrangement of phases: prophase, metaphase, anaphase, and telophase. ... In meiosis II, these chromosomes are further separated into sister chromatids. Meiosis I includes crossing over or recombination of genetic material between chromosome pairs, while meiosis II does not.
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The major difference between meiosis II and mitosis is the ploidy of the starting cell. Meiosis II begins with two haploid cells, which have half the number of chromosomes as somatic cells. This is because they will develop into gametes. Mitosis begins with a diploid cell.
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During prophase I and metaphase I of meiosis, a chromosome consists of a tetrad (4 chromatids or 4 DNA molecules) and is reduced to two chromatids (2 DNA molecules) by the time metaphase II occurs. 3.
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Definition. The first metaphase of meisosis I encompasses the alignment of paired chromosomes along the center (metaphase plate) of a cell, ensuring that two complete copies of chromosomes are present in the resulting two daughter cells of meiosis I. Metaphase I follows prophase I and precedes anaphase I.
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First thing to remember is that interphase is a stage associated with replication of DNA, and growth. Once meiosis starts, the purpose is to produce a haploid gamete. So there is no further need of replication or growth. Hence between meiosis I and meiosis II , there is no interphase.
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In Metaphase 1, paired homologous chromosomes line up along the equator of the cell. However, in mitosis and Metaphase 2, it is sister chromatids that line up along the equator of the cell.