In a Punnett square for a two-factor cross, it is not possible for all of the offspring to be identical.
The Punnet square simply refers to a square diagram that's used for the prediction of the genotypes of a breed. The diagram is usually used by biologists in order to determine the probability of the genotype of an offspring.
For example, if there's a dominant and recessive genes represented as B and b. When they're crossed, the offsprings that are gotten will be BB, Bb, Bb, bb.
From the above, it shows that in a Punnett square for a two-factor cross, it is not possible for all of the offspring to be identical.
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