Ared flower and a white flower produce link offspring. what condition explains this phenomenon?

The condition which explains this phenomenon is called incomplete dominance.  Two different organisms (flowers) with two different phenotypes (red and white) will produce an offspring with a third phenotype.  In this case, the third phenotype is the pink color.  It is a blending of the parent traits.  

humans, along with other animals and plants, have linear chromosomes that are arranged in pairs within the nucleus of the cell. the only human cells that do not contain pairs of chromosomes are reproductive cells, or gametes, which carry just one copy of each chromosome.

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.