'Rheiddiad' fyddai 'radiation' yma, dwi'n
meddwl, fel llinellau'n rheiddio.
Claire
ym maes bioleg
Dyma ddiffiniad o'r term:
In evolutionary
biology, an adaptive radiation is the evolution of ecological and phenotypic diversity within a
rapidly multiplying lineage.[1]
Starting with a recent single ancestor, this process results in the speciation
and phenotypic adaptation of an array of species exhibiting different
morphological and physiological traits with which they can exploit a range of
divergent environments. [1]
a
fyddai pelydriad ymaddasol yn gwneud y tro?
Dw i ddim mor siwr am
'pelydriad'. Unrhyw sylwadau ogydd?
Martin
