In this article we will discuss about the structure of different organs of Mammalia. 1. Skin (Vertical Section) Mammalia: (Fig. 41.1) The skin consists of two layers; an outer epidermis and a deeper dermis. A subcutaneous layer of loose connective tissue is present beneath the dermis. 1. Epidermis, a stratified, keratinized epithelium. It has two layers: A. Stratum corneum, the [...]
In this article we will discuss about the spot identification of different animals. I. Protozoa: Balantidium sp.: (Fig. 36.1) 1. Unicellular animal. 2. Short cilia cover whole body. 3. Cytopharynx present. 4. Micro- and macronucleus present. 5. Contractile vacuoles two with radiating canals. Systematic position: Subkingdom — Protozoa Phylum — Ciliophora Class — Kinetofragminophorea Subclass — Vestibuliferia Order — Trichostomatida [...]
In this article we will discuss about the meaning of pedigree analysis with its problem. Pedigree is a genealogical table, chart or diagram representing the ancestral line of an individual man or animal having a long span of life and low reproductive ability. Pedigree analysis is the process of determination of the exact mode of inheritance of a gene when [...]