This is a wild rose. Did you ever
think about the fact that most roses in our gardens have amply of petals, while
wild roses just have a handful of petals (five in this case)? The main reason
is that garden roses are bred variants that hardly could survive in the wild.
Most or all of their stamens have mutated to become petals. The wild rose is a
Rosa Canina or "dog rose" has some other exciting features that are
not apparent when looking at it. To start with, the name may have something to
do with the detail that it once was used to treat bites of rabid dogs.
It was hardly very effective, but
that infrequently stops people from trying. Its fruit, and the rose hip, can be
used for making jam and tea. As it comprises a high level of vitamin C, it is
considered a known nutritious. Genetically, this is an extremely confusing
little flower. In almost all human cells, like in most other animals and
plants, there are two sets of chromosomes, which is having two sets of
chromosomes actually called to be "diploid".
The Rosa Canina is pentaploid,
which means that it has 5 sets of identical chromosomes. I have no exact idea
why it thinks that is a decent idea. The pollen contributes only one genome,
while the egg transmits four genomes in an arrangement without any respect for
the equality of the sexes. In this hodgepodge, there are 7 chromosomes that seem
as pairs while the rest prefer to stay single. It is absolutely nothing that
one spontaneously would think when looking at this inconspicuous little rose. But
if somebody offers you Rosa Canina for your birthday/anniversary, you can now amuse
them with particular interesting genetic facts about the flower.
