BIOL 2030 Lecture Notes - Lecture 5: Microvillus, Pinacoderm, Ciliate
Document Summary
Both sexual (new genotypes) and asexual (same genotype) mechanics are common. Asexual reproduction in protozoans: binary fission: controlled mitotic replication of chromosomes followed by splitting of an individual into 2 individuals. Cell splits into two; cloning of genetic material: multiple fission: nucleus divides many times followed by a rapid differentiation of the cytoplasm into many individuals (ex. Common in type of unicellular eukaryotes known as formainifera) Nucleus disintegrates so you are left with genetic material. Lots of rounds of replication of the dna so you have multiple copies of the genome. Each cell gets one copy of the genome. Several rounds of genome replication are packaged into individual cells: budding: part of the parent individual breaks off and differentiates to form a new complete individual (ex. Still get replication but its a small portion of the cell that pinches off. Left with a large parent cell and a small little bud that ends up growing into a larger cell.
