Which antibody is primarily responsible for allergic reactions? MCQ with Answer and Explanation

Explanation:
The holotype is the single physical specimen designated by the original author when the species is first formally described. It serves as the ultimate reference point for that species name. An isotype is a duplicate of the holotype, syntypes are multiple specimens cited when no holotype was designated, and paratypes are additional specimens cited in the original description.

Explanation:
Meiosis I is the reductional division where homologous chromosomes separate, resulting in two haploid cells with duplicated chromatids. Meiosis II is equational, separating sister chromatids. Mitosis maintains the diploid number. Meiosis ensures genetic variation and gamete formation.

Explanation:
Chondrichthyes are cartilaginous fishes with a skeleton made entirely of cartilage, a ventral mouth, and lack operculum. Pristis (sawfish), Scoliodon (dogfish), and Carcharodon (great white shark) belong to this class. Labeo rohita (Rohu) and Catla catla are Osteichthyes (bony fishes). Hippocampus (seahorse) is also a bony fish. Exam tip: Chondrichthyes = cartilaginous; Osteichthyes = bony.