Not always because there could be birth defects, mutations, or other variables.
Budding: A Type Of Asexual Reproduction When An Organism Is Developed Because Its Parents Divided Themself Into Two Equal Parts.
Fragmentation: A Type Of Asexual Reproduction Where An Organism Splits Off Into Fragments To Later Be Developed Into A Fully Mature Individual That Is A Clone Of The Original Organism
Answer: Mass = Volume x Density