sister chromatids are homologous chromosomes?
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Sister chromatids are 2 copies of a single chromosome and so are genetically identical (they also are physically attached to one another). ... They are homologous chromosomes: they have the same set of genes, but their alleles for those genes can be different (since your mother and father are not genetically identical).
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crossing over occurs between homologous chromosomes in prophase I, before chromosomes line up at the metaphase plate. homologous chromosomes separate to daughter cells (sister chromatids do not separate) in the first division, creating haploid (1N) cells.
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After the genetic material is duplicated and condenses during prophase of mitosis, there are still only 46 chromosomes – however, they exist in a structure that looks like an X shape: For clarity, one sister chromatid is shown in green, and the other blue. These chromatids are genetically identical.
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Homologous chromosomes are chromosomes which contain the same genes in the same order along their chromosomal arms. ... Since homologous chromosomes are not identical and do not originate from the same organism, they are different from sister chromatids.
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Explanation: Although both are very similar, the difference between the two is the pairing. Homologous chromosomes are basically two similar chromosomes inherited from father and mother. They are homologous because they have the same genes, though not same alleles.
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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.
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Homologous chromosomes are basically two similar chromosomes inherited from father and mother. They are homologous because they have the same genes, though not same alleles. During meiosis, the homologous chromosomes pair up during first prophase. When they do so, the homologous pair becomes known as a bivalent.
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chromosome is DNA tightly coiled around histones (proteins) homologous chromosomes are two different copies of the same chromosome, and sister chromatids are two identical copies of a chromatin connected by a centromere.
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Because DNA has already replicated (during S phase of interphase) when it coils into a chromosome, each chromosome actually consists of two identical copies. The two copies of a chromosome are called sister chromatids.
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Homologous chromosomes are separated during anaphase of meiosis I. When are chromatids separated? Chromatids are separated during anaphase of meiosis II.
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The two sister chromatids are separated from each other into two different cells during mitosis or during the second division of meiosis. ... Sister chromatids are by and large identical (since they carry the same alleles, also called variants or versions, of genes) because they derive from one original chromosome.
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Prior to meiosis, homologous chromosomes replicate to form sister chromatids. In prophase I, the first stage of meiosis, sister chromatids pair up to form a tetrad. While in close proximity, homologous chromosomes exchange sections of DNA randomly in a process called crossing over.
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A pair of sister chromatids is called a dyad. Once sister chromatids have separated (during the anaphase of mitosis or the anaphase II of meiosis during sexual reproduction), they are again called chromosomes, each having the same genetic mass as one of the individual chromatids that made up its parent.
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Sister chromatids are two identical copies of the same chromosome formed by DNA replication, attached to each other by a structure called the centromere. During cell division, they are separated from each other, and each daughter cell receives one copy of the chromosome.
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Homologous and non-homologous chromosomes are the two types of chromosomes found in the genome. Homologous chromosomes pair during meiosis. The homologous pair consists of alleles of the same genes in the same loci in both chromosomes. But, non-homologous chromosomes consist of alleles of different genes.
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1 Answer. Chromatin is a long chain of DNA. Chromosomes is rolled up DNA when it is going through cell division. Sister chromatids are the branches of the same chromosome.
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The matched pairs of chromosomes in a diploid organism are called homologous chromosomes. Homologous chromosomes are the same length and have specific nucleotide segments called genes in exactly the same location, or locus.