Question

In monohybrid F1 progeny why were all plants tall?​

Answer 1

Gregor Mendel's Peas

The cross-pollination of tall and dwarf plants resulted in tall plants. All the hybrid plants were tall. ... Mendel observed that traits which were absent in F1 generation had reappeared in the F2 generation. He called such suppressed traits as recessive traits and expressed traits as dominant traits.

Answer 2

Answer:

in F1 progeny pure tall and pure short plants were pollinated and heterozygous plants with genetically dissimilar characters were obtained thus all plants were tall due to presence of 'T' factor