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TRENDS IN EVOLUTION
Evolution is change in the heritable characteristics of biological population over successive generation. Molecular evolution is change in the sequence of molecule of cell. Evolutionary genetics is study where how change in genes leads to change. Molecular markers have ability to detect genetic variation. TRENDS IN EVOLUTION [...READ FULL]
OSTRACODERMS – ORGANISATION AND AFFINITIES
The earliest known vertebrates to appear in fossil record were jawless primitive fishlike animals collectively known as the ostracoderms, and placed under the class Ostracodermi. They resembled the present day cyclostomes (lampreys and hagfishes) in many respects and together with them, constitute a special group of jawless vertebrates, the Agnatha. [...READ FULL]
MODES OF SPECIATION
New species form by speciation, in which an ancestral population splits into two or more genetically distinct descendant populations. Speciation involves reproductive isolation of groups within the original population and accumulation of genetic differences between the two groups. [...READ FULL]
Role of Zoology in Ecosystem Conservation and Understanding
Role of Zoology in Ecosystem Conservation and [...READ FULL]
PHYLUM PORIFERA
INTRODUCTION Phylum Porifera, commonly known as [...READ FULL]
ADVANCED NERVOUS SYSTEM IN MOLLUSCA
Nervous system in mollusca has a well developed nervous system. It also bears paired ganglia, nerves and connectives. One important aspect is there that a Circumentric ring is formed by ganglia. A pair of cerebral ganglia (masses of nerve cell bodies) innervate the head, mouth, and associated sense organs. NERVOUS SYSTEM IN MOLLUSCA [...READ FULL]
CHARACTERISTICS OF PHYLUM PLATYHELMINTHES
INTRODUCTION Phylum Platyhelminthes, commonly [...READ FULL]
CONCEPT OF FREE ENERGY AND THERMODYNAMICS PRINCIPLES
CONCEPT OF FREE ENERGY AND THERMODYNAMICS [...READ FULL]
Birdwatching: A Symphony of Nature’s Beauty and Wonder
Introduction Birdwatching: A Symphony of [...READ FULL]
CHROMATOPHORES: STRUCTURE AND TYPES
INTRODUCTION Coloration plays a crucial role in [...READ FULL]