What is the meaning of phenotype could be represented by a number of different genotype I found this sentence in multiple sources but I didnt understand
in one thesis

With a neutral representation each phenotype could be represented by a
number of different genotype

and in another thesis

it may be possible for neural networks with functionally equivalent
topologies to be represented by a number of different genotypes

And in another source


the genotypical representation:
010 001 100 0000 1100 0000 0000 0000 0011 0100 0000 0000
However, the graph (phenotype) can also be represented by a number of
different genotypes. E.g:


010 001 100 0110 1100 0000 0011 0000 0011 0100 0000 0000


010 001 100 0000 1100 0000 0000 0000 0011 0100 1110 0100

Up to my understanding the first phenotype is the representation of the graph, so why the second or third phenotypes are different representations. how did we come up with the bold genotypes
The same function can be described in several ways.
If you're familiar with finite automata, then you should know that the same regular language (&quot;phenotype&quot;) can be represented by many different finite automata (&quot;genotype&quot;).
The same holds in many other cases, unless you choose an encoding which guarantees that every function has a unique description. It is not clear whether this is even desirable. For example, the genetic code has some redundancy which causes the same DNA sequence to encode the same proteins.