Here are your notes on Chromatin! DNA is the main genetic constituent of cells, carrying information in a coded form from cell to cell and from organism to organism. Within cell nucleus, DNA is not free but is complexed with proteins in a structure called chromatin. Chromatin consists of double-stranded DNA (two hydrogen-bonded polynucleotide strands) to which large amounts of [...]
This article provides useful notes about the Structure, Zone of transition, Rootlets and Chemical composition of Basal Bodies! Cilium or flagellum may be basally connected usually with a particle embedded in a clear layer of cytoplasm just beneath the plasma membrane, called basal body. In case of several cilia, many basal bodies are arranged uniformly in parallel rows under the [...]
This article provides useful notes about Ultrastructure, Variation, Chemical composition, Movement and Origin of Cilia and Flagella! The surface of certain cells is drawn out to form fine hair-like processes called cilia or flagella according to their length. Cilia (L., cili, eye lash) and flagella (L., little whip) are situated external to cytoplasm but have their origin from cytoplasm. Many [...]
