@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Sequence other = (Sequence) obj;
		if (definitionLine == null) {
			if (other.definitionLine != null)
				return false;
		} else if (!definitionLine.equals(other.definitionLine))
			return false;
		if (nucleotides == null) {
			if (other.nucleotides != null)
				return false;
		} else if (!nucleotides.equals(other.nucleotides))
			return false;
		return true;
	}