#ulliell

Actually personality is quite heritable (around 50%) according to twin studies in psychology. However, it’s not the case that someone’s personality is always 50% from their parents’ genes since heritability is a an average population estimate, so it’s very difficult to judge whether resemblence between two people is genetic or not

Hello! I happen to have a bachelor’s degree in Genetics. As far as I know, studies that link personality traits/disorders (for example, psychopathy) to a gene or set of genes are still highly controversial in the field (none of my professors had a definite stance on the subject, for one), usually because a lot of those inherited traits are associated with epigenetics or triggers caused by environmental circumstances, for example. 

I’m sure you know the subject yourself, but twin studies are indeed a method of analysing population genetics and a great tool to explore heritability, meaning the proportion of phenotypic variance attributable to genetic variance. This is a method often used to analyse discrete (meaning, quantitative) traits such as body height, body weight, development of complex diseases such as type 2 diabetes, hypertension, Chron’s disease, etc. It seeks to explore to what extent the environment or the genome plays a hand in a given trait. Phenotypic variance can be split up into genetic and environmental components--be it shared/common environmental or unique environmental differences. In simpler terms, because monozygotic twins can share up to 100% of their DNA, it’s easier to discard the genetic component and attribute any phenotypic variances to a difference in the environment in which each twin grew up. 

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THE SEVEN DEADLY SINS OF THE BORGIAS || 2023

╚ P R I D E - rodrigo borgia

"we would restore rome to its former glory. under the borgias, it will shine as it did beneath the caesars. but if we are to achieve this greatness, your birthright, it will be together. as one. as family."

THE SEVEN DEADLY SINS OF THE BORGIAS || 2023

╚ E N V Y - cesare borgia

"i was born with a stain. a mark. like the mark of cain. but it is the mark of my father, my family. the mark of borgia. i have tried to be other than i am. and i have failed."

THE SEVEN DEADLY SINS OF THE BORGIAS || 2023

╚ W R A T H - juan borgia

"i see your purpose here, your pathetic, fervent hope. you want to inhabit my shoes. wear my armour. carry my sword. but what you don't realise is that i am the prodigal son. and our father is never wrong. i am the light of his life!"

THE SEVEN DEADLY SINS OF THE BORGIAS || 2023

╚ G R E E D - lucrezia borgia

"the game is your name, lucrezia. what is your name?" "lucrezia." "lucrezia who?" "borgia." "yes. borgia. do you understand? you are a borgia. you can have both, lucrezia borgia."