Dictionary » P » Pegasus



1. A winged horse fabled to have sprung from the body of medusa when she was slain. He is noted for causing, with a blow of his hoof, Hippocrene, the inspiring fountain of the muses, to spring from mount Helicon. On this account he is, in modern times, associated with the Muses, and with ideas of poetic inspiration. Each spurs his jaded Pegasus apace. (Byron)

2. (Science: astronomy) A northen constellation near the vernal equinoctial point. Its three brightest stars, with the brightest star of andromeda, form the square of Pegasus.

3. (Science: zoology) A genus of small fishes, having large pectoral fins, and the body covered with hard, bony plates. Several species are known from the East Indies and china.

Origin: L, fr. Gr.

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Re: why only 2 sexes

... each small step having an adaptive advantage. It is for exactly the same reason that no 6 limbed terrestrial vertebrate lives. We cannot have a pegasus since there is no way to evolve the requisite extra limbs in small steps, with each stage being an advantage.

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by skeptic
Wed May 05, 2010 4:34 am
Forum: Evolution
Topic: why only 2 sexes
Replies: 15
Views: 9725

Improbability and testability

An example of such a structure would probably need to be a saltation of some kind. For example a pegasus. Horses only have four appendages and it would not be evolutionarily possible for them to evolve wings on their backs.

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by robsabba
Mon Apr 26, 2010 2:20 pm
Forum: Evolution
Topic: Improbability and testability
Replies: 1
Views: 2078

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