Each individual seed arises from an individual ovule and sperm, so the answer is no, but...
For an inbred line the seeds will be mostly genetically identical due to selection for homozygosity (the same alleles on each chromosome) and with sufficient inbreeding they should be homozygous for just about every trait. F1 hybrid seed derived from two inbred lines will also be very nearly identical, since whatever combination of alleles they get, they will end up with chromosomes essentially identical to each parent.
Segregation in terms of Mendelian inheritance simply means the homologous chromosomes the parent has are separated into haploid ova and/or pollen. For two copies of a given chromosome, each sperm or egg gets one. In the process of duplicating those chromosomes, segments are exchanged and recombined. Simply put, two chromosomes, one from dad and one from mom, become four chromosomes, all with some bits from dad and other bits from mom. The chromosomes are then independently assorted into the gametes.
Beginning with the F2 generation random combinations of traits will come about through the combined effect of these processes. If you encourage segregation by selection, isolation, selfing, and culling you will select for homozygosity and eventually end up with 99% genetically identical seeds (I really do not know what the actual figure is.)