Hi Blake,
The Patio Princess is a determinate plant - the gene is called sp "self pruning" and it is a recessive trait. Although the Princess is a hybrid, it must be a cross between two determinate parents for the determinate trait to be expressed. So the hybrid is sp/sp.
When you cross it with an indeterminate, your F1 will all be sp/-, one sp allele and one 'wild type' or indeterminate, and they will all be indeterminate because that is dominant. Other traits might vary in the F1 plants, unless the Princess parents are really similar. When you grow out F2 seeds from that generation (selfed) the expected ratio is 1/4 determinates.
There are other traits in growth habit though that are not simply dominant or recessive, may be QTL's "quantitative trait loci" where effects are additive... I'm not sure. But some of your F2 determinates will likely have a larger growth habit with more leaves between fruit clusters than the Princess. You will need to grow 16 or more plants to get one F2 with the same 'patio' plant size.
I'm growing an F4 this year of a determinate/indeterminate cross, and still seeing differences in the growth habit of sibling plants in this generation.
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