Homologous Chromosomes (상동 염색체)-153268이은영

One of the key concepts of biology which is the formation promote chromosomes. All DNA human beings on wants trans that an accurate, It’s making in a row. It is the process of fertilization.   From Wikipedia   A couple of homologous chromosomes, or homologs(상응하는 것), are a set of one maternal and one paternal chromosomes that pair up with each other inside a cell during meiosis(감수분열). These copies have the same genes in the same loci(locus 위치) where they provide points along each chromosome which enable a pair of chromosomes to align correctly with each other before separating during meiosis. This is the basis for Mendelian inheritance which characterizes inheritance patterns of genetic material from an organism to its offspring parent developmental cell at the given time and area.   Structure[edit]   Homologous chromosomes are chromosomes which contain the same genes in the same order along their chromosomal arms. There are two main properties of homologous chromosomes: the length of chromosomal arms and the placement of the centromere(동원체).   The actual length of the arm, in accordance with the gene locations, is critically important for proper alignment. Centromere placement can be characterized by four main arrangements, consisting of being either metacentric(중부 동원체 염색체), submetacentric(차충부 동원체 염색체), telocentric(단부 동원체형), or acrocentric(말단 동원체형). Both of these properties are the main factors for creating structural homology between chromosomes. Therefore, when two chromosomes of the exact structure exist, they are able to pair together to form homologous chromosomes.   Since homologous chromosomes are not identical and do not originate from the same organism, they are different from sister chromatids(염색분체). Sister chromatids result after DNA replication has occurred, and thus are identical, side-by-side duplicates(사본) of each other.