should cross breeding be aloud if not why?

Question

why or why not?

Answer 1

We need it in plants. Without it, we don't have the right type of wheat that we use everyday, and corn never comes into existence. So in plants, yes.

In animals no. I don't think there are enough advantages for doing it.

This is from reading your other question and realizing that you actually mean interspecies breeding.

Answer 2

Cross-breeding of what with what? As you have
worded the question the only possible answer is
that there is no way to prevent it.

Copulation of one species of animal with another
does occur (it's called bestiality when done by
humans), but the usual result is that no offspring
are produced because the two species are too
different from each other. When there are
offspring they are often sterile, as with the mule.
There are animals in which the hybrids are
fertile, but not very many kinds of these.

The case is different with plants. Many of these
can be hybridized with each other to produce
fertile hybrids. However if they are very
different kinds of plants there may be no or
sterile offspring. Hybrid fertility is usually low
unless the two hybridizing species are close to
each other genetically to begin with. However
there is a mechanism by which fertility can be
restored, polyploidy. Botanists have estimated
that perhaps half of the existing kinds of plants
are of hybrid origin.

If there is anything that should be avoided, it is
continued inbreeding within a species. This can
lead to a great increase in conditions resulting
from producing individuals with defects caused
by homozygosity of deleterious recessive
genes. A little inbreeding does no harm, it is
when it is continued for a long time and involves
individuals that are closely related that there are
likely to be problems. Whether such problems
develop and how severe they are depends on
how many and which recessive genes the
individuals carry. It is conceivable that no bad
results might occur at all, if the original parents
carried no "bad" genes. However, it is likely
that all or at least most individuals do carry such
genes.

Answer 3

No because it is proven in dog cross-breeding that it leads to specific medical conditions. And look at the horse cross-bred with a donkey....the mule is sterile. I'm sure that's for a reason.

Answer 4

the sheep may kick you in de nuts

Answer 5

No: it should be quiet