meroblastic egg

См. также в других словарях:

• Egg cleavage — Segmentation Seg men*ta tion, n. The act or process of dividing into segments; specifically (Biol.), a self division into segments as a result of growth; cell cleavage; cell multiplication; endogenous cell formation. [1913 Webster] {Segmentation… …   The Collaborative International Dictionary of English

• meroblastic — an egg of which only part undergoes cleavage usually one with a large amount of yolk which is not incorporated into the developing egg, e.g. in Myxini, Elasmobranchii, Holocephali, many teleosts …   Dictionary of ichthyology

• meroblastic cleavage — Cleavage of a heavily yolked egg in which only the egg cell divides, leaving the yolk undivided …   Dictionary of invertebrate zoology

• afteregg — noun A meroblastic egg, ovum, or ovule which has acquired its store of foodyolk, or been otherwise modified from its original primitive condition as an egg cell or protovum …   Wiktionary

• deutoplasm — The yolk of a meroblastic egg; the nonliving material in the cytoplasm, especially that stored in the ovum as food for the developing embryo, the commonest types being lipoid droplets and yolk granules. SYN: deuteroplasm. [deuto + G. plasma,… …   Medical dictionary

• Cleavage (embryo) — In embryology, cleavage is the division of cells in the early embryo. The zygotes of many species undergo rapid cell cycles with no significant growth, producing a cluster of cells the same size as the original zygote. The different cells derived …   Wikipedia

• 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

• cleavage — 1. Series of mitotic cell divisions occurring in the ovum immediately following its fertilization. SYN: segmentation (2). SEE ALSO: c. division. 2. Splitting of a complex molecule into two or more simpler molecules. SYN: scission (2). 3 …   Medical dictionary

• Embryogenesis — [ http://www.ncbi.nih.gov/About/primer/genetics cell.html NCBI] .] Embryogenesis is the process by which the embryo is formed and develops. It starts with the fertilization of the ovum, egg, which, after fertilization, is then called a zygote.… …   Wikipedia

• Platypus — For other uses, see Platypus (disambiguation). Platypus[1] Temporal range: 66–0 Ma …   Wikipedia

• List of medical roots, suffixes and prefixes — This is a list of roots, suffixes, and prefixes used in medical terminology, their meanings, and their etymology. There are a few rules when using medical roots. Firstly, prefixes and suffixes, primarily in Greek, but also in Latin, have a… …   Wikipedia