- embryonic stages
- Zoologyமூலவுருப்பருவங்கள்
English-Tamil dictionary. 2014.
embryonic stages
Look at other dictionaries:
Embryonic diapause — Delayed Implantation or Embryonic Diapause is a reproductive strategy used by approximately 100 different mammals in seven or eight different orders. In embryonic diapause, the embryo (blastocyst) does not immediately implant in the uterus, but… … Wikipedia
Carnegie stages — In embryology, Carnegie stages are a standardized system of 23 stages used to provide a unified developmental chronology of the vertebrate embryo.The stages are delineated through the development of structures, not by size or the number of days… … Wikipedia
Hamburger-Hamilton stages — In developmental biology, the Hamburger Hamilton stages (HH) are a series of 46 chronological stages in chick development, starting from laying of the egg and ending with a newly hatched chick. It is named for its creators, Viktor Hamburger and… … Wikipedia
cleavage stages — initial stages in embryonic development where divisions of blastomeres are clearly marked. Usually the first through sixth cleavages (2 64 cells) … Dictionary of ichthyology
Carnegie stages — 23 numbered stages of human embryonic development defined by anatomical characteristics such as the appearance of the developing limbs … Medical dictionary
animal development — Introduction the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by … Universalium
Embryo drawing — refers to any representation of the illustration of embryos in their developmental sequence. In plants and animals, an embryo develops from a zygote, the single cell that results when an egg and sperm fuse during fertilization. In animals, the… … Wikipedia
Recapitulation theory — The theory of recapitulation, also called the biogenetic law or embryological parallelism and often expressed as ontogeny recapitulates phylogeny is a disproven hypothesis that in developing from embryo to adult, animals go through stages… … Wikipedia
evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… … Universalium
Nuclear lamina — The nuclear lamina is a dense ( 30 to 100 nm thick) fibrillar network inside the nucleus of a eukaryotic cell. It is composed of intermediate filaments and membrane associated proteins. Besides providing mechanical support, the nuclear lamina… … Wikipedia
Cephalopod — Cephalopods Temporal range: Devonian – Recent[1] (Stem groups from Cambrian)[2] … Wikipedia
