If this is a True/False answer, the answer would be TRUE. depending on the dominance of the allele, and if Co-dominance and incomplete dominance aren't factors.
A group of similar (accoding to function) types of cells, when comes together to perform a specific function, then it forms a tissues.
When a group of similarly working tissues come together then they form an organ.
And this relation could be written as
cell > tissue > organ
So, organ is a collection of tissues and tissues are collection of cells.
The DNA of the offspring is identical to that of its parents