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Symmetrical

Definition

adjective

Pertaining to, characterized by, or exhibiting symmetry


Supplement

In biology, symmetry refers to the proportionality of one side to the other side(s) in a sagittal plane or around an axis. A body plan, for instance, is described to be symmetrical if the parts on one side is (more or less) the same as those of another in terms of form, number, arrangement, and/or position.

Most flowering plants show symmetry. Their flowers may be radially symmetrical or bilaterally symmetrical. Radially symmetrical flowers have floral parts that are of the same form, components, and size around an axis. Bilaterally symmetrical flowers are those in which the left and the right sides of a sagittal plane are mirror images.


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Locomotory Evolution

... first to experience a new environment (think about a worm sticking its head out of the soil)the organis is able to react more quickly. Radially symmetrical bodies are much slower although they tend to be better for sessile organisms which dont have to move such as sponges, corals, echinoderms ...

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by Youngji
Sun Feb 01, 2015 12:36 pm
 
Forum: Evolution
Topic: Locomotory Evolution
Replies: 1
Views: 1505

Locomotory Evolution

... bilaterians which is the main cause to cephalisation) over multi-directional movement (a much higher form) which already existed in the radially symmetrical jelly-fishes even before the bilaterians appeared ?

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by Tista
Tue Dec 30, 2014 7:30 am
 
Forum: Evolution
Topic: Locomotory Evolution
Replies: 1
Views: 1505

The question about TATA sequence flexibility

... shown in the lower picture, four phenylalanine amino acids jam into the DNA minor groove and form the kinks that bend the DNA. There are also two symmetrical asparagine amino acids that form hydrogen bonds at the very center. The combination of the unusual flexibility of TATA DNA sequences and ...

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by Fantomas
Sat Aug 31, 2013 10:57 am
 
Forum: Molecular Biology
Topic: The question about TATA sequence flexibility
Replies: 1
Views: 2547

un even development of muscle

Although people claim mammals are bilateraly symmetrical based on morphology, we have assymmetry on the anatomical and physiological level 1. heart is always in the left or one side 2. Organs like spleen, liver and looping of intestine is always ...

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by balamurugan3
Fri Aug 09, 2013 2:01 pm
 
Forum: Genetics
Topic: un even development of muscle
Replies: 4
Views: 4097

Re:

In the skeleton and muscle area, we're supposed to be bilaterally symmetrical. Not everyone is, for a number of possible reasons. You could have picked up some imbalance as an embryo, or you maybe it's how you exercise. Most activities use more than one ...

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by teju85
Fri Aug 02, 2013 11:24 am
 
Forum: Genetics
Topic: un even development of muscle
Replies: 4
Views: 4097
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