Examlex
In discussing the control of enzyme transcription, it is essential to consider the cell's environment.
Gastrula
An early phase in embryonic development during which the simple blastula is reorganized into a three-layered structure, leading to the differentiation of the body's tissues and organs.
Morula
An early stage in embryonic development in animals, characterized by a solid ball of cells formed from the division of a fertilized egg.
Zygote
The initial cell formed when a sperm cell unites with an egg cell, representing the first stage in the development of a new organism.
Blastopore
The initial opening formed during early embryonic development that can develop into either the mouth or anus in animals.
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