From: Charles Plessy Date: Thu, 7 Jun 2018 05:41:58 +0000 (+0900) Subject: Developmental genes. X-Git-Url: https://source.charles.plessy.org/?a=commitdiff_plain;h=6f44485dfe88697cae1d4e5fce972f2c2190035f;p=source.git Developmental genes. --- diff --git a/tags/Oikopleura.mdwn b/tags/Oikopleura.mdwn index 6fe6f385..0aa83943 100644 --- a/tags/Oikopleura.mdwn +++ b/tags/Oikopleura.mdwn @@ -66,6 +66,7 @@ Genome 2008|biblio/19030770]]. The major spliceosome is hypothethised to have evolved to become more permissive in order to splice G*-AG sites ([[Denoeud et al., 2010|biblio/21097902]]). + Transcriptome ------------- @@ -90,15 +91,20 @@ Tools - DNAi was used to screen for maternal genes ([[Omotezako et al., 2017|biblio/28281645]]). + Development ----------- - - The Oikopleura CNS possesses homologs of the vertebrate forebrain, + - The _Oikopleura_ CNS possesses homologs of the vertebrate forebrain, hindbrain, and spinal cord, but not the midbrain. No expression of _pax2/5/8_ is detected between the _otxa_ + _otxb_ and the _hox1_ territories. ([[Cañestro et al., 2005|biblio/16111672]]). - The _pum1_ and _vas4_ RNAs show localised expression during development. Prior hatching, _pum1_ is found outside the embryo ([[Olsen et al., 2018|biblio/29486709]]). + - Duplicated developmental genes were found by [[Denoeud et al., 2010|biblio/21097902]], + who noted that it is exceptional in invertebrates, and hypothethise that it may + be caused by neofunctionalisation (house production, ...) or by the small size of + the genome (doubling the genes would then double the amount of regulatory sequences). Physiology