From a single ear of corn, a farmer planted $200$ kernels which produced $140$ tall and $40$ dwarf plants. The genotype of these offsprings are most likely
$TT, Tt$ and $tt$
$TT$ and $tt$ only
$TT$ and $Tt$ only
$Tt$ and $tt$ only
Test cross is useful to know the...
The production of gametes by the parents, formation of zygotes, the $\mathrm{F}_{1}$ and $\mathrm{F}_{2}$ plants, can be understood from a diagram called:
For understanding the genotype of an offspring which cross should be performed
Definitions / Explanation : Genes & Alleles.
The cross used to ascertain whether the plant is homozygous or heterozygous is