diff --git a/source/DataModel.cpp b/source/DataModel.cpp
index 7d7d996..ada23b5 100644
--- a/source/DataModel.cpp
+++ b/source/DataModel.cpp
@@ -3,6 +3,7 @@
 DataModel::DataModel(QObject *parent)
 	: QObject(parent)
 	, m_metaData(this)
+	, m_genus(this)
 {
 }
 
@@ -11,6 +12,10 @@ void DataModel::write(QJsonObject &target) const
 	QJsonObject metaData;
 	m_metaData.write(metaData);
 	target["MetaData"] = metaData;
+
+	QJsonObject genus;
+	m_genus.write(genus);
+	target["Genus"] = genus;
 }
 
 void DataModel::read(const QJsonObject &source)
diff --git a/source/DataModel.h b/source/DataModel.h
index 34258f0..7e271bf 100644
--- a/source/DataModel.h
+++ b/source/DataModel.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "MetaData/MetaDataModel.h"
+#include "Genus/GenusModel.h"
 
 #include <QJsonObject>
 
@@ -10,6 +11,7 @@ class DataModel : public QObject
 
 public:
 	MetaDataModel m_metaData;
+	GenusModel m_genus;
 
 public:
 	DataModel(QObject *parent);
diff --git a/source/Genus/GenusModel.cpp b/source/Genus/GenusModel.cpp
index 4943bd7..bf41b70 100644
--- a/source/Genus/GenusModel.cpp
+++ b/source/Genus/GenusModel.cpp
@@ -2,6 +2,15 @@
 
 #include <QDebug>
 
+void CheckableItems::write(QJsonObject &json) const
+{
+	for (const auto &pair : *this)
+	{
+		json[pair.second.getText().c_str()] =
+			pair.second.isChecked();
+	}
+}
+
 GenusModel::GenusModel(QObject *parent)
 	: QAbstractTableModel(parent)
 {
@@ -104,6 +113,17 @@ QVariant GenusModel::headerData(
 
 void GenusModel::write(QJsonObject &json) const
 {
+	QJsonObject tiere;
+	m_tiere.write(tiere);
+	json["Tiere"] = tiere;
+
+	QJsonObject futter;
+	m_futter.write(futter);
+	json["Futter"] = futter;
+
+	QJsonObject zirkus;
+	m_zirkus.write(zirkus);
+	json["Zirkus"] = zirkus;
 }
 
 void GenusModel::read(const QJsonObject &json)
@@ -125,7 +145,7 @@ bool GenusModel::isValidIndex(const QModelIndex &index) const
 	}
 }
 
-GenusModel::CheckableItems &GenusModel::getItems(const QModelIndex &index)
+CheckableItems &GenusModel::getItems(const QModelIndex &index)
 {
 	switch (index.row())
 	{
@@ -142,8 +162,7 @@ GenusModel::CheckableItems &GenusModel::getItems(const QModelIndex &index)
 	throw std::runtime_error("invalid index");
 }
 
-const GenusModel::CheckableItems &GenusModel::getItems(
-	const QModelIndex &index) const
+const CheckableItems &GenusModel::getItems(const QModelIndex &index) const
 {
 	switch (index.row())
 	{
diff --git a/source/Genus/GenusModel.h b/source/Genus/GenusModel.h
index fd11b8c..06f5856 100644
--- a/source/Genus/GenusModel.h
+++ b/source/Genus/GenusModel.h
@@ -30,16 +30,25 @@ public:
 	}
 };
 
-#include <QAbstractTableModel>
 #include <QJsonObject>
 
+#include <map>
+
+class CheckableItems : public std::map<size_t, CheckableItem>
+{
+	public:
+		using std::map<size_t, CheckableItem>::map;
+
+		void write(QJsonObject &json) const;
+};
+
+#include <QAbstractTableModel>
+
 class GenusModel : public QAbstractTableModel
 {
 	Q_OBJECT
 
 private:
-	using CheckableItems = std::map<size_t, CheckableItem>;
-
 	CheckableItems m_tiere = {{0, {"Tiger"}}, {1, {"Bär"}}, {2, {"Katze"}},
 		{3, {"Pferd"}}, {4, {"Gans"}}, {5, {"Elefant"}}, {6, {"Katze"}},
 		{7, {"Hund"}}};