Cannabis Grow Bible.pdf - the DMT-Nexus

367
_________________________________________________________________________________________
s s
S Ss Ss
S Ss Ss
Now up until this point he did not know
which trait from which plant was recessive or
dominant. But since all the seeds where solid,
then he knew that Pea Plant#1 contained the
dominant genotype for seed shape and that Pea
Plant#2 contained the recessive genotype for
wrinkled seeds. Also he knew that Pea Plant#2
contained the recessive genotype for seed
shape. This means that in future TEST CROSSES
with other pea strains, he could determine if a
seed shape trait is Homozygous or Heterozygous
because he had identified the recessive trait
(ss).
Remember the rule of test crossed to
determine this? Here it is again.
1. The plant with the dominant trait is always
crossed with an organism with the recessive
trait.
2. If ANY offspring show the recessive trait,
the unknown genotype is heterozygous
3. If ALL the offspring have the dominant
trait, the unknown genotype is homozygous
dominant
4. Large numbers are needed for reliable
results.