Summary

This document outlines the process of cell division, including mitosis and meiosis. It covers key concepts like DNA replication, the cell cycle, and the differences between sexual and asexual reproduction. It also includes information regarding genetic diversity and the stages of cell division.

Full Transcript

Reproduction, repair, genetic diversity DNA replication has to happen replicated mitosis half meiosis reduction division cell cycle interphase g phase s ph...

Reproduction, repair, genetic diversity DNA replication has to happen replicated mitosis half meiosis reduction division cell cycle interphase g phase s phase g2 phase mitosis OR meiosis cytokinesis genetically identical genetic stability growth cell replacement regeneration vegetative reproduction sister chromatids centriole condense spindle nucleolus nuclear envelope kinetochore aster operator of the cell opposite actin cleavage furrow cell plate phragmoplast diploid haploid sperm and eggs homologous chromosomes homologue pairs sister chromatids synapsis (crossing over) chiasmata bivalents tetrads non-recombinant homologous chromosomes chiasmid after meiosis I sister chromatids recombinant opposite homologue pairs, not individual chromosomes random assortment 2^23 -> over 8 million sister chromatids opposite sister chromatids 4 genetically different daughter cells crossing over random alignment and segregation of homologous chromosome pairs at metaphase and anaphase Random alignment and segregation of chromosomes at metaphase II and anaphase II sexual asexual different identical yes no 2 haploid diploid yes no growth repair genetic diversity, gametes reproduction 2 1 4 2 23 46 (after NOT in) (after NOT in) telophase I, II telophase Anaphase II (separate chromatids) anaphase