The slower locomotion of today's gorillas and humans, rather than being inherent to apes, may have evolved later on.
Related functions such as histone modification may have already been present in the ancestor of modern eukaryotes, although other functions such as regulation of development by miRNA are thought to have evolved later.
Thus, PAR3 and PAR4 seem to have evolved later in evolution.
Previously, only one (U5) snRNA had been identified in Giardia, so it had appeared possible that the ancestral spliceosome was mainly protein based, and that the catalytic role of snRNAs had evolved later in eukaryotic evolution.
The dual targeting of NDC type proteins was found to have evolved later in plant evolution.
Uniparental cpDNA inheritance may have evolved later and independently in the Chlorophyta and the Streptophyta lineages.
Translation is thought to have evolved later via an unspecified or, at best, invented ad hoc selective process.
Interestingly, it has recently been hypothesized that unisexual reproduction may even be the original ancestral form of sexual reproduction to which sexes have evolved later [ 91].
It is specifically noted that these subfamilies belong in larger families containing groups that might have evolved later, possibly in connection with multicellularity.
CACNA1C presents an additional pair or MEHEs that may have evolved later in the ancestor of sarcopterygians, as it is conserved in coelacanth, Xenopus, and mammals.
The inability of many invertebrates to synthesise ascorbate led to early speculation that ascorbate synthesis may have evolved later in metazoan evolution (Chatterjee, 1973).
