diff --git a/src/gui/Encyclopedia/encyclopedia.tw b/src/gui/Encyclopedia/encyclopedia.tw
index 8140c9442d83218be401d606ebcb797e8e93eb15..61134d4fdcf1cfbf9c3ccfb1d257594439bc8ae6 100644
--- a/src/gui/Encyclopedia/encyclopedia.tw
+++ b/src/gui/Encyclopedia/encyclopedia.tw
@@ -3179,6 +3179,13 @@ MODS
 	What would a slaveowner be without the ability to customize their slaves' bodies? The Free Cities offer a variety of ways to achieve this for an arcology owner. Choose a more particular entry below:
 	<br>
 
+<<case "Inbreeding">>
+	At the intersection of incest and pregnancy lies inbreeding. As seen in royal families throughout history, high levels of inbreeding can result in severe issues, often manifesting as facial deformities or reduced intellectual capacity.
+
+	<br><br>One metric for quantifying inbreeding is the coefficient of inbreeding (CoI), which is the probability that both copies of a person's genes come from the same common ancestor. For example, without any previous inbreeding a child from self-fertilization has a CoI of 0.5, a child of two full siblings has a CoI of 0.25, and a child of two first cousins has a CoI of 0.0625.
+
+	<br><br>Enterprising breeders trying to breed specific traits should be mindful of the inbreeding coefficients of their stock: the higher the coefficient, the higher the chance that children will be slow or deformed.
+
 <<default>>
 	Error: bad title.
 <</switch>>
diff --git a/src/gui/Encyclopedia/encyclopediaRelatedLinks.tw b/src/gui/Encyclopedia/encyclopediaRelatedLinks.tw
index 977e489706c77724ea61c26500adbdee70b913f6..7fddb42e1033992d8e5f3ea2d6e8e22c61271a87 100644
--- a/src/gui/Encyclopedia/encyclopediaRelatedLinks.tw
+++ b/src/gui/Encyclopedia/encyclopediaRelatedLinks.tw
@@ -244,7 +244,7 @@ SLAVE RELATIONSHIPS
 /**********
 PREGNANCY
 **********/
-<<case "Artificial Insemination" "Breeders Dietary Blend" "Childbirth and C-Secs" "Cloning" "Fertility Mix" "Gestation Drugs and Labor Suppressants" "Hyper-Pregnancy" "Ova Transplantation" "Player Pregnancy" "Pregnancy" "Pregnancy Generator" "Slave Fertility" "Super Fertility Drugs" "Surrogacy">>
+<<case "Artificial Insemination" "Breeders Dietary Blend" "Childbirth and C-Secs" "Cloning" "Fertility Mix" "Gestation Drugs and Labor Suppressants" "Hyper-Pregnancy" "Ova Transplantation" "Player Pregnancy" "Pregnancy" "Pregnancy Generator" "Slave Fertility" "Super Fertility Drugs" "Surrogacy" "Inbreeding">>
 	<<= App.Encyclopedia.Dialog.linkSC("Pregnancy", "Pregnancy")>>
 	| <<= App.Encyclopedia.Dialog.linkSC("Slave Fertility", "Slave Fertility")>>
 	| <<= App.Encyclopedia.Dialog.linkSC("Player Pregnancy", "Player Pregnancy")>>
@@ -261,6 +261,7 @@ PREGNANCY
 	| <<= App.Encyclopedia.Dialog.linkSC("Ova Transplantation", "Ova Transplantation")>>
 	| <<= App.Encyclopedia.Dialog.linkSC("Eugenics Breeding Proposal", "Eugenics Breeding Proposal")>>
 	| <<= App.Encyclopedia.Dialog.linkSC("Repopulationist Breeding School", "Repopulationist Breeding School")>>
+	| <<= App.Encyclopedia.Dialog.linkSC("Inbreeding", "Inbreeding")>>
 
 /**********
 INFLATION