BSC 2023 Lecture Notes - Lecture 20: Spindle Apparatus, Sister Chromatids, Chromatid
Document Summary
Growth (g1) stage cell returns to normal size; resumes its function in body. Synthetic (s) stage a copy is made of all the dna in the cell (dna replication). Growth (g2) stage increase in growth and final preparations for cell division. 3. dna is localized in the cells nucleus, doesn"t leave. Thymine (t) c. ) adenine (a) d. ) guanine (g) Chromatin network of fine threads in the nucleus composed of dna and proteins. Chromosome vehicle by which hereditary information is passed to the next generation. Chromatid one of 2 identical copies of dna making up a duplicated chromosome. Centromere point of attachment for mitotic spindle; where sister chromatids attach. Mitotic spindle microtubule structure that brings about chromosomal movement during nuclear division. Dna replication synthesis of a new dna double helix prompt to mitosis and meiosis. Prophase mitotic phase during which chromatin condenses(make something more concentrated) so that chromosomes appear; chromosomes are scattered.