BIO315H5 Lecture Notes - Lecture 25: Metastasis, Connective Tissue, Radio Television Of Kosovo
Document Summary
Process by which a diploid cell divides to generate haploid cells. Two rounds of cell division in meiosis. Meiotic s phase where the dna is replicated. In meiosis i - paired homologs coming from the mother and father. Here you have pairing of the homologs and segregation at anaphase i. Separation of the homologs into two daughter cells, but sister chromatids remain together. In meiosis ii - separation of sister chromatids - similar to mitosis. Produce 4 haploid daughter cells that differentiate to form germ cells. Paternal and maternal homologs are closely aligned. Homologs held together by a protein complex called the synaptonemal complex. Structure/site of crossing over is called the chiasma. Axial core that interact with transverse filaments from each homolog. Forms when a protein axial core of duplicated homologs are linked by rod-shaped transverse filaments. Recombination complex forms at dsdna breaks of a chromatid.
