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Developmental biology [r]: The study of how cells grow and interact to form an organism. [e]
(CC) Image: Chiori et al., 2009 A typical study in developmental biology, targeting several traits of interest across different
stages of
development within one or between several species. Here, the
expression of several
Hox genes (
CheHox9-14A,
CheHox9-14B and
CheHox9-14C) was measured in the non-
fertilised egg as well as the
blastula,
gastrula,
planula and
medusa (from left to right) of the
hydroid Clytia hemisphaerica.
Scale bars: E, J, O: 100 µm; A–D, F–I, K–N: 50 µm. Legends: g:
gonad; m:
manubrium; t:
tentacle; tb:
tentacle bulb.