Questions tagged [symmetry]

Symmetry is the balanced distribution of duplicate body parts or shapes within the body of an organism.

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Biological & Evolutionary Reasons for Palm (Bi)Symmetry

The fingers of the human palm exhibit a (bi)symmetrical pattern with regards to their size, in the sense that the thumb and the pinky are almost the same size, and the same holds for the index and ...
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Why is facial symmetry of the opposite sex attractive?

Why do we give so much importance to the symmetry of face in the opposite sex? Why do we yearn to reproduce with a person with a beautiful face? How is it important for survival, if at all? Is there a ...
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Are there certain symmetric-pair muscles that are slightly bigger and NOT due to handedness?

Ok, hear me out, I was just thinking about an article in Nature I read in the past titled "Scrotal asymmetry in man and in ancient sculpture"$^{\dagger}$ and more recently an entire medical textbook ...
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What is bilateral symmetry in “bilateria”, an actual symmentry

Wikipedia defines bilateria as : animals with bilateral symmetry, i.e., they have a head ("anterior") and a tail ("posterior") as well as a back ("dorsal") and ...
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Why is the heart not in the middle of the body?

All mammals that I can think of have a high degree of bilateral symmetry (In fact, almost every animal I can think of is like this). So why is the human heart not exactly in the middle of the body? ...
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What is Biradial Symmetry?

I am trying to visualize biradial symmetry. I have read the section in the Wiki entry on Symmetry in Biology but it is quite brief and there is no example to illustrate it. I haven’t been able to find ...
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How symmetrical can an organism be?

The majority of living things have some form of symmetry. Many mammals and fish have bi-symmetry, and anemones, starfish and jellyfish (among others) have radial symmetry. However, there usually are ...
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Why might the chirality of gastopods be dominantly dextral?

This wikipedia page on gastropods provides a definition of chirality, and briefly describes the genetic mechanisms behind why a shell is wound left (sinistral) or right (dextral) handed. It also ...