Isolecithal - Wikipedia
网页Isolecithal (Greek iso = equal, lekithos = yolk) refers to the even distribution of yolk in the cytoplasm of ova of mammals and other vertebrates, notably fishes of the families Petromyzontidae, Amiidae, and Lepisosteidae. [1] Isolecithal cells have two equal hemispheres of yolk.
Isolecithal Definition & Meaning | Merriam-Webster Medical
网页The meaning of ISOLECITHAL is having the yolk small in amount and nearly uniformly distributed.
Yolk | Development, Nutrition & Formation | Britannica
网页yolk, the nutritive material of an egg, used as food by a developing, embryonic animal. Eggs with relatively little, uniformly distributed yolk are termed isolecithal. This condition occurs in invertebrates and in all but the lowest mammals.
DEVELOPMENTAL BIOLOGY 3230 - University of Utah
网页Isolecithal: sparse evenly distributed yolk, eg., sea urchin, mouse. Mesolecthal: moderate amount of yolk, often unevenly distributed, eg., frog. Telolecithal: dense yolk concentrated at one end, eg., bird, reptile. Centrolecithal: yolk concentrated at the middle of …
Isolecithal yolk | embryology | Britannica
网页yolk, the nutritive material of an egg, used as food by a developing, embryonic animal. Eggs with relatively little, uniformly distributed yolk are termed isolecithal. This condition occurs in invertebrates and in all but the lowest mammals.
Isolecithal - Wikiwand
网页Isolecithal (Greek iso = equal, lekithos = yolk) refers to the even distribution of yolk in the cytoplasm of ova of mammals and other vertebrates, notably fishes of the families Petromyzontidae, Amiidae, and Lepisosteidae. [1] Isolecithal cells have two equal hemispheres of yolk.
An Introduction to Early Developmental Processes
网页At one extreme are the eggs of sea urchins, mammals, and snails. These eggs have sparse, equally spaced yolk and are thus isolecithal (Greek, “equal yolk”). In these species, cleavage is holoblastic (Greek holos, “complete”). meaning that the cleavage furrow extends through the entire egg. These embryos must have some other way of ...
How Amount and Distribution of Yolk Affect Cleavage
网页Eggs with very little yolk that is evenly distributed in the egg are called isolecithal (Gr. isos, equal, + lekithos, yolk). In such eggs, cleavage is holoblastic (Gr. holo, whole, + blastos, germ), meaning that the cleavage furrow extends completely through the egg (see Figure 8 …
isolecithal - 百度百科
网页[aɪsə'lesɪθəl] [1] 美式读音. [ˌaɪsə'lesəθəl] 词 性. 形容词. 目录. 1 单词用法. 2 短语搭配. 单词用法. 播报. 编辑. ADJ (of the ova of mammals and certain other vertebrates) having an evenly distributed yolk (卵)均卵黄的 → compare heterolecithal [2] 短语搭配. 播报. 编辑. isolecithal ovum 均黄卵 ; 翻译 ; 均黄卵 [2] 词条图册 更多图册. 概述图册(1张) 参考资料. 1 isolecithal 是什么意思 ．金山词典 [引用日期2020-11-04]
ISOLECITHAL 释义 | 柯林斯英语词典 - Collins Online Dictionary
网页In chemistry, iso- is used in the names of substances which are isomeric with the substance denoted by the base word (isocyanic acid). Other words that use the affix iso- include: isoelectronic, isoprene, isoseismic, isotope, isotype.