Biology 1001A Lecture Notes - Lecture 8: Sister Chromatids, Chromosome Segregation, Dna Replication
27 Jan 2020
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Section 12. 3): a structural and mechanical web of interwoven cables and motors of the cytoskeleton separates the replicated dna molecules precisely into the daughter cells. Meiosis produces daughter nuclei that are different in that they have one-half the number of chromosomes the parental nucleus had. chromosomes, the nuclear units of genetic information divided and distributed by mitotic cell division. Most eukaryotes have two copies of each type of chromosome in their nuclei, and their chromosome complement is said to be diploid, or 2n. The number of chromosome sets is called the ploidy of a cell or species. Before a cell divides in mitosis, duplication of each chromosome produces two identical copies of each chromosome called sister chromatids. Newly formed sister chromatids are held together tightly by sister chromatid cohesion, in which proteins called cohesins encircle the sister chromatids along their length.
