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state the phase where each of the following processes occurs: sister chromatids separate, homologous chromosomes form pairs, two haploid cells form.

Sagot :

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PROCESS OF THE FOLLOWING PHASES

Chromatids

  • A chromatid is one half of a chromosome that has been duplicated. One chromosome is made up of one DNA molecule before replication.
  • The DNA molecule is replicated during replication, and the two molecules are known as chromatids.
  • These chromatids divide longitudinally to form distinct chromosomes during the latter stages of cell division.

Homologous chromosome

  • A pair of homologous chromosomes, also known as homologs, are a pair of maternal and paternal chromosomes that pair up inside a cell during fertilization.
  • Homologs share the same genes in the same loci, which act as points along each chromosome to help a pair of chromosomes align correctly before they separate during meiosis.
  • This is the foundation for Mendelian inheritance, which describes how genetic material is passed down from an organism to its offspring parent developing cell at a certain time and location.

Haploid cells

  • A cell or organism with a single pair of chromosomes is called haploid.   A haploid cell contains just one pair of chromosomes, and this most commonly relates to sex cells, such as eggs or sperm.

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Centromeres break down and homologous chromosomes split during anaphase I. The chromosomes travel to opposing poles in telophase I, and the cell divides into two haploid cells during cytokinesis.

Homologous Chromosomes: During anaphase I of meiosis I, homologous chromosomes are separated. Sister Chromatids: During anaphase II of meiosis II and the anaphase of mitosis, sister chromatids are detached from their centromere.

  • After prophase I and metaphase I, anaphase I is the third stage of meiosis I. The spindle apparatus, a microtubule network, is used to transport chromosomes to both poles of a meiotic cell at this stage. The homologous chromosomes are divided into two groups by this method.

for more information regarding this topic:

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