Cannabis Grow Bible.pdf - the DMT-Nexus

383
_________________________________________________________________________________________
But we also know that because no variations
occurred in the population that both parents
where homozygous for that trait. However ALL
the offspring are heterozygous.
Now here is where we can take a big short cut
in manipulating the gene pool for that
population.
By cloning the parent plant MM, we can use this
clone in our cross with the Mm offspring. This
is known as a BACKCROSS. Obviously if our
parent is female then we will have to use males
from the Mm selection in out backcross.
M m
M MM Mm
M MM Mm
Now out first backcross will result in 50%
being homozygous for that trait (MM) and 50% of
the offspring being heterozygous (Mm) for that
trait!
If we did not backcross but just used the
heterozygous offspring for the breeding
programme we would have ended up with: