In Lathyrus odoratus, hybrid blue flowered and long pollen plant is test crossed with homozygous recessive red flowered and round pollen plant then how many parental types are obtained when genes are present in cis stage in parents?

Preformation theory concerning transmission of characters was given by

Mendelism was rediscovered by

$I.$ Morgan

$II.$ De Vries

$III.$ Correns

$IV.$ Tschermark

Choose the correct option

When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is

It is a mutagen.

$MN$ factors are due to