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In amphibians, the pattern of cleavage is typically holoblastic and unequal. This means that the entire egg undergoes cleavage, but the divisions are not equal; the animal pole (where the embryo will develop) divides more rapidly than the vegetal pole. The resulting cells, or blastomeres, vary in size, with smaller cells forming at the top and larger ones at the bottom. This unequal cleavage contributes to the organization and differentiation of the developing embryo.
What else can I help you with?
Does olivine have cleavage?
Olivine does not have cleavage. It exhibits a granular or irregular fracture pattern instead of cleavage planes.
Does gold have cleavage or fracture?
the cleavage of gold is hackly. gold has niether fracture or cleaveage
How can one identify cleavage in minerals?
Cleavage in minerals can be identified by observing how the mineral breaks along certain planes or directions, resulting in smooth, flat surfaces. This cleavage is a result of the internal atomic structure of the mineral. By examining the shape and pattern of the breakage, one can determine the cleavage of a mineral.
Is an opal birthstone cleavage or fracture?
Opal is known for its cleavage, which is the tendency of the stone to break along certain planes due to its crystal structure. This can give opal a characteristic pattern of fractures or cleavage surfaces when it is damaged or cut.
Do protostomes and deuterostomes differ in their manner of cell cleavage during embryonic?
Yes, protostomes exhibit spiral cleavage, where the cells are arranged in a spiral pattern. Deuterostomes exhibit radial cleavage, where the cells are arranged in a radial pattern. This difference occurs during early embryonic development and influences the overall body plan formation.
What is the cleavage for amethyst?
cleavage: Imperfect, when it splits the stone doesn't break in a regular pattern each time. fracture:conchoidal,when it shatters the pieces have smooth surfaces,uneven brittle.
What is sulfurs cleavage cleavage?
Sulfur's cleavage is imperfect.
What is effect of yolk on cleavage?
Yolk affects cleavage by influencing the type and pattern of cell division during early embryonic development. In species with a high yolk content, such as birds and reptiles, cleavage is often discoidal and meroblastic, meaning that only a portion of the zygote undergoes division due to the large yolk mass. In contrast, organisms with little to no yolk, like many mammals, exhibit holoblastic cleavage, where the entire zygote divides uniformly. The presence and distribution of yolk ultimately determine the cleavage pattern and subsequent developmental processes.
What is the cleavage or fracture of peridot?
Peridot typically exhibits a conchoidal fracture, meaning it breaks in a smooth, curved manner like glass. It does not have a distinctive cleavage pattern due to its crystalline structure.
Is beryllium fracture or cleavage?
Beryllium does not exhibit cleavage because it lacks planes of weakness along which it can split cleanly. Instead, beryllium tends to fracture in a conchoidal or irregular pattern when subjected to stress.
One way to test a mineral is to break it and see how many directions of what it has?
cleavage....
What is more common a cleavage or fracture?
A fracture is more common than a cleavage. Fractures occur when a material breaks without any predetermined pattern, whereas cleavages occur along specific planes due to the arrangement of atoms in the material.
