public byte[] toByteArray() {
		return _genes.toByteArray();
	}
Returns the byte array, which represents the bit values of {@code this}
chromosome.

@return a byte array which represents this {@code BitChromosome}. The
        length of the array is {@code (int)Math.ceil(length()/8.0)}.
jenetics/src/main/java/io/jenetics/BitChromosome.java