Cleavage and early development
15 important questions on Cleavage and early development
What is the animal-vegetal axis in an embryo?
What is the yolk-rich end of an embryo called?
What is the cytoplasm rich end of an embryo called?
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What is a cleavage furrow?
What are eggs with an abundance of yolk densely concentrated at the vegetal pole of the egg called?
What are eggs with a large centrally located mass of yolk called?
What are the four different types of eggs?
- Isolecithal
- Mesolecithal
- Telolecithal
- Centrolecithal
Which of the four type of eggs has the least difficulty forming cleavage furrows?
What kind of cleavage occurs when much yolk is present and what are its characteristics?
What kind of cleavage occurs when there is little yolk present and what are it's characteristics?
Which of the two kind of cleavages occurs in isolecithal and mesolecithal eggs?
Which of the two kind of cleavages occurs in telolecithal and centrolecithal eggs?
What are the 4 four terms used to discuss the angle and direction of the cleavage furrows?
- Radial
- Spiral
- Discoidal
- Rotational
What kind of cleavage is restricted to the cytoplasmic rim of the egg and what are its characteristics?
What is meant with indirect development?
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