In Mendelian case, the offpspring will take on the pheonotype of the parent that donates the dominant allele True Or False. I'm giving 65 points for this

True

Explanation:

According to Mendelian's law of inheritance, the dominant allele is the allele that is expressed in an individual while the recessive allele are usually not expressed in the phenotype of an individual.

If a parents is dominant for a particular allele of tallness and recessive for a particular allele of shortness it is observed that the dominant allele is what is expressed in the phenotype of the offspring and inherited in simple Mendelian fashion by the offspring.