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Dictionary » B » Blastula

Blastula

Definition

noun

An early form of an embryo undergoing developmental processes, such as cleavage. It is marked by the presence of blastocoel and cells made up of around 128 cells.


Supplement

Blastula contains a fluid-filled blastocoel surrounded by layers of cells that emerge from series of cleavage. The process involved in the formation of blastula is referred to as blastulation.


Word origin: from Greek blastos, bud + Latin -ula

Synonym:

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animal+plant Cell Mitosis Question

does the percentage of time spent in phase of mitosis in a Onion Root same as the time spend in phase in Animal Mitosis(whiteflesh blastula)? i calculated about 24% of time, the onion root is under going prophase, does that mean the whiteflesh blastula is also going under prophase 24% of ...

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by cs892
Sun Oct 19, 2008 4:15 am
 
Forum: Cell Biology
Topic: animal+plant Cell Mitosis Question
Replies: 6
Views: 2822

Differentiation doubt

... or any cell for that matter because they know it from their parent cell. But when we start from the zygote,and cells go through morula ,gastrula,blastula stages,and the three germ layers,how does the cell know at that time which genes to activate in order to make a given cell a neuron,cardiac ...

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by mayanks_098
Tue Mar 25, 2008 2:18 pm
 
Forum: Molecular Biology
Topic: Differentiation doubt
Replies: 1
Views: 354

Embryo Development

zygote, blastula, morula, gastrula, embryo gametogenesis fertilization blastulation gastrulation neurulation= only in Chordates organogenesis Hope this helps.

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by Volvox
Thu Mar 22, 2007 3:18 am
 
Forum: Human Biology
Topic: Embryo Development
Replies: 8
Views: 1349

Embryo Development

Maybe zygot - morulla - blastula - gastrula - neurula things? :?

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by Dr.Stein
Wed Mar 21, 2007 1:27 am
 
Forum: Human Biology
Topic: Embryo Development
Replies: 8
Views: 1349

Animalia

To answer the original questions: Humans do not go through alternation of generations. Very few groups of animals do. We do go through blastula & gastrula, but not in the classic "ball" shape (most vertebrate blastulas are really a hollow disc, sitting on a yolk).

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by Darby
Sun Oct 15, 2006 11:02 pm
 
Forum: Zoology Discussion
Topic: Animalia
Replies: 11
Views: 1299
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