asymmetrical
(adjective)
 having disproportionate arrangement of parts; exhibiting no pattern
Examples of asymmetrical in the following topics:
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Gene Expression in Stem Cells- Symmetric division maintains stem cell lines and asymmetric division yields differentiated cells.
- To ensure self-renewal, stem cells undergo two types of cell division: symmetric and asymmetric.
- An asymmetric cell division produces two daughter cells with different cellular fates.
- This mechanism is known as extrinsic asymmetric cell division.
- The term asymmetric cell division usually refers to such intrinsic asymmetric divisions.
 
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Body Plans- Animal body plans can have varying degrees of symmetry and can be described as asymmetrical, bilateral, or radial.
- They can be asymmetrical, radial, or bilateral in form .
- Asymmetrical animals are those with no pattern or symmetry, such as a sponge.
- The sponge is asymmetrical, the sea anemone has radial symmetry, and the goat has bilateral symmetry.
 
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Animal Characterization Based on Body Symmetry- At a very basic level of classification, true animals can be largely divided into three groups based on the type of symmetry of their body plan: radially symmetrical, bilaterally symmetrical, and asymmetrical.
 
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Organic Enantiomers- Optical isomers are stereoisomers formed when asymmetric centers are present; for example, a carbon with four different groups bonded to it.
 
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Excavata- Many of the protist species classified into the supergroup Excavata are asymmetrical, single-celled organisms with a feeding groove "excavated" from one side.
 
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Selective Permeability- Plasma membranes are asymmetric: the interior of the membrane is not identical to the exterior of the membrane.
 
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Characteristics of Birds- Flight feathers are asymmetrical, which affects airflow over them and provides some of the lifting and thrusting force required for flight .
 
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Structures of the Heart- The heart muscle is asymmetrical as a result of the distance blood must travel in the pulmonary and systemic circuits.
 
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Amino Acids- Amino acids have a central asymmetric carbon to which an amino group, a carboxyl group, a hydrogen atom, and a side chain (R group) are attached.
 
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Chromosomal Structural Rearrangements- A pericentric inversion that is asymmetric about the centromere can change the relative lengths of the chromosome arms, making these inversions easily identifiable.