## Abstract __Heliocidaris erythrogramma__ is a direct‐developing sea urchin that has evolved a modified ontogeny, a reduced larval skeleton, and accelerated development of the adult skeleton. The __Orthopedia__ gene (__Otp__) encodes a homeodomain transcription factor crucial in patterning the lar
✦ LIBER ✦
Mechanisms of Evolutionary Changes in Timing, Spatial Expression, and mRNA Processing in themsp130Gene in a Direct-Developing Sea Urchin,Heliocidaris erythrogramma
✍ Scribed by Kristin M. Klueg; Michael A. Harkey; Rudolf A. Raff
- Book ID
- 115597710
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 542 KB
- Volume
- 182
- Category
- Article
- ISSN
- 0012-1606
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## Abstract To understand the role of body axes in the evolution of larval form, we use the two sea urchins in the genus __Heliocidaris,__ which have distinctly different larval morphologies. __Heliocidaris tuberculata__ is an indirect‐developing sea urchin, which forms a pluteus larva, whereas its