2. TT X TT
Name the 4 offsprings:

In this cross, all the offsprings will be tall with the same genotype of TT.

Explanation:

Considering the character to be height.

The traits of this character would be tall and dwarf.

Let Tall be the dominant trait and dwarf be the recessive one.

Tall is denoted by T

Dwarf is denoted by t

According to the question, TT X TT

The cross is shown in the punnett square attached.

According to the cross,

the genotypic ratio is 4 : 0 (TT)

i.e., 100% TT

The phenotypic ratio is 4 : 0

i.e., 100% tall

Therefore in this cross, all the offsprings will be tall with the same genotype of TT.

radiation

explanation:

heat is transmitted by radiation