There are some simpler organisms , aquatic creatures and early
land creatures that are able to produce a new generation ;
through replication .
They have done so for hundreds of millions of years without
any apparent degradation of their genetic material .

There are also some that reproduce or replicate , depending
on the environmental circumstances .

Humans and many other animals reproduce and consequently expand
the gene pool .
However if there is a severe abnormality in the embryo then a
spontaneous abortion or miscarriage will occur .
This may also be apparent if the genetic material of the embryo
has a high viral load .
Humans , depending upon their environment , tend to experience
a lot of miscarriages . With the advent of modern medicine this
isn't as apparent in most developed countries .

Mostly though , reproduction without miscarriage , happens
very often .

The mechanism that repairs genetic damage , either through
replication or reproduction is surely worth investigating .
As those seeking infertility treatment may have a disruption
to this mechanism a wider base , including healthier
individuals , might be appropriate .

Historically this type of investigation has been inappropriate
and immoral when applied to humans and in some instances animals.
WWII ?

With modern methods the knowledge might be more easily and
ethically obtained , GeneChip analysis , large database , micro-
sampling and worldwide computing are the resources necessary.
More and more these are becoming standard research tools .

Perhaps twenty consenting persons would be required , for non disruptive
analysis .

To summarize :


Replication .

Genetic Repair Mechanism .

Reproduction .

Cell Division
Genetic Repair Mechanism .
Genetic Reprogramming .
Egg / Sperm production .

Both successful for at least one thousand million years .