Biology 3593B Study Guide - Quiz Guide: Actomyosin Ring, Cytokinesis, Asexual Reproduction
Document Summary
In cytokinesis the division of the cytoplasm differs in plants and animals. Asexual reproduction is based on mitotic division of the nucleus. In the animal cells, the plasma membrane pinches between the nuclei because of a contractile ring of microfilaments of actin and myosin. Cells of multicellular organisms break off to form a new individual. The offspring are clones, which are genetically identical to the parent. In sexual reproduction the offspring are not identical to the parents. It requires gametes created by meiosis, with both parents each contributing one gamete to an offspring. Gametes and offspring differ genetically from each other an from the parents. Somatic cells are body cells that are not specialised for reproduction. Each somatic cell contains homologous pairs of chromosomes with corresponding bases, with each of the parents contributing one homolog. Gametes contain only one set of chromosomes. If haploid the number of chromosomes = n.