During embryonic development, the establishment of polarity along anterior/ posterior, dorsal/ventral or medial/lateral axis is called[2003]a)Pattern formationb)Organizer phenomenac)Axis formationd)AnamorphosisCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Establishment of polarity in developing embryo along different axis is induced by organizer phenomenon.

Answer

It's ans should be C.

Answer

During embryonic development, the establish­ment of polarity along anterior/posterior, dorsal/ventral or medial/lateral axis is called organizer phenomenon. The organizer is the part of an embryo consisting of undifferentiated cells that follow a specific course of development by identifying the polarity of particular region

Answer

The org the organisation part is consisting the undifferentiated cell that's why the option is correct

Answer

Organizer Phenomenon

The establishment of polarity along the anterior/posterior, dorsal/ventral, or medial/lateral axis during embryonic development is called the organizer phenomenon. This process plays a crucial role in determining the overall body plan and the formation of different tissues and organs.

Pattern Formation
Pattern formation refers to the process by which cells and tissues differentiate and organize themselves into distinct structures and patterns. It involves the precise spatial and temporal arrangement of cells, which is essential for the development of complex organisms.

Axis Formation
Axis formation is the initial step in pattern formation and refers to the establishment of the main body axes - anterior/posterior, dorsal/ventral, and medial/lateral - during embryonic development. The formation of these axes is crucial for the subsequent development and differentiation of cells and tissues.

Explanation of the Correct Answer
The correct answer for this question is option B, 'Organizer Phenomenon.' The organizer phenomenon refers specifically to the process of establishing polarity along the anterior/posterior, dorsal/ventral, or medial/lateral axis during embryonic development. This process involves the formation of organizer regions, which play a critical role in organizing and directing the development of surrounding cells and tissues.

The organizer regions are specialized groups of cells that secrete signaling molecules known as morphogens. These morphogens act as positional cues, providing information to neighboring cells about their relative position within the developing embryo. By responding to these morphogens, cells can differentiate and form specific structures and tissues.

The organizer phenomenon was first described by experimental embryologists Hans Spemann and Hilde Mangold in the early 20th century. They conducted a series of experiments using amphibian embryos and discovered that the transplantation of a small section of dorsal lip tissue (the organizer region) from one embryo to another could induce the formation of a secondary body axis.

This groundbreaking experiment demonstrated the existence of a specialized group of cells capable of directing the development of neighboring cells and tissues. These organizer regions are now known to play a fundamental role in establishing the body axes and coordinating the overall development of the embryo.

In summary, the establishment of polarity along the anterior/posterior, dorsal/ventral, or medial/lateral axis during embryonic development is known as the organizer phenomenon. This process involves the formation of specialized organizer regions that secrete signaling molecules to direct the development of surrounding cells and tissues.

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