Describe the mechanism of chromosome movement through the different stages of mitosis. Be able to describe the cellular events occurring in the prophase, metaphase, anaphase, and telophase of mitosis. Each chromatid has a kinetochore, a specialized grouping of proteins to which several spindle microtubules will become attached. One parent always passes on a duplicate of all its genes to offspring describes asexual reproduction. Describe the basic aspects of sexual reproduction.
Sexual reproduction puts together new combinations of genes in offspring.
Genetic variation is acted upon by agents of natural selection and so is a basis of evolutionary change. In any sexually reproducing species, the haploid number always has one chromosome from each of the homologous pairs of chromosomes. During meiosis II, the sister chromatids of each chromosome are separated from each other. During prophase I, each threadlike chromosome and its homologue are drawn together by a process called synapsis. This results in gene recombination.