
But a potential problem is lurking in its proposed revision.
The Genetics Society of Japan, as you might expect, spends a lot of time discussing dominant and recessive genes. That doesn’t mean its members like those terms, though, and the organization has announced that it will no longer be using the traditional Japanese terms for “dominant” and “recessive,” citing a need to replace them in order to prevent misunderstandings about, and prejudice against, those in the latter group.
In Japanese, the word for dominant is yusei, which is written in kanji like this.
Recessive, on the other hand, is ressei, and written with these characters.
The problem with these terms, according to the GSJ, lies in the other vocabulary their respective first kanji show up in. 優 is the leading character in the verb sugureru (優れる), which means “to be better/superior/preferable.” Meanwhile, 劣 is found at the beginning of otoro (劣る), a verb that’s the opposite of sugureru and means “to be inferior.”
▼ Dominant and superior (left column) vs. recessive and inferior (right)
The GSJ contends that because of these overlapping kanji, laymen can become confused and arrive at the incorrect conclusion that dominant genes or genetic traits are preferable to recessive ones, and thus view people with recessive genes or traits as being less capable than others.
Because of that, the GSJ has revised its internal terminology standards. 優性/yusei/dominant has been replaced with 顕性/akirasei/overt, with 顕 having the meaning of “exposure” or “clarity.” The chosen replacement for 劣性/ressei/recessive is 潜性/sensei/latent, with 潜 representing the condition of latency or being hidden.
GSJ president and University of Tokyo professor Takehiko Kobayashi said that the organization plans to submit a petition to the Ministry of Education, Culture, Sports, Science and Technology to have the new terms replace existing ones in textbooks and educational materials. The GSJ will also be releasing a compiled collection of a number of proposed genetics terminology revisions commercially, for 2,800 yen (US$25), sometime later this month.
However, it’s debatable how necessary the change is. The 優 from 優性/dominant also shows up in 優しい/yasashii/kind-hearted, yet Japanese culture has no widely held perception of people with dominant genes being more caring or considerate than people of any other genotype. In the case of long-established compound-kanji vocabulary, native speakers don’t necessarily have their image of the word colored by its kanji components, in much the same way as English speakers don’t get a sense of repetition from the word “respect,” despite its origins lying in the concept of “looking back/repeatedly (hence the “re-“) at someone in admiration.”
There’s also the fact that while 潜性/sensei means “latent,” the kanji 潜 also shows up in the verb 潜む/hisomu, which means “to be hidden,” or, in more sinister contexts, “to lurk.” That’s something which isn’t likely to leave the best impression on people who get caught up on etymology, and may end up being a major sticking point in the GSJ’s bid to have its proposed terms become the new standard.
Source: Asahi Shimbun Digital via Hachima Kiko
Top image: Pakutaso
Insert images ©SoraNews24
Follow Casey om Twitter, where he wonders how much trouble would have been averted if Metal Gear Solid’s Liquid Snake understood that recessive genes aren’t bad.





Japan’s Kanji of the Year for 2023 reveals the worries of Japanese society
Japan triples departure tax, foreign tourists and locals now must pay more to leave country
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
Don’t judge this Kiki’s Delivery Service book by its cover, because it’s not actually a book!
One Piece docking at Round 1 amusement centers in both Japan and the USA
Starbucks Japan teams up with Converse Tokyo for a new limited-edition collection in honour of Tanabata
Studio Ghibli releases a musical diorama based on a touching anime scene from My Neighbour Totoro
Japanese overnight sightseeing train returns for summer with ramen stops and ocean views
KFC Japan creates spicy summer fried chicken chips together with Calbee
Blind Tokyo commuter explains the easiest place for him to stand while riding the train
Sanrio Character Poll announces winners, Hello Kitty absent from top 10 in many countries
Live-action Spirited Away stage play announces world tour with first-ever U.S. and Canadian dates
Tokyo has only two barley tea makers, and we visited one to see how mugicha is made
Pikachu brings electric style to brand-new Pokémon G-Shock watch featuring every stater trio
Sleep at Hoshinoya Nara Prison, one of the most unique hotels in Japan
Japanese man’s gross conveyor belt sushi social media prank video gets him a 500,000-yen fine
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
Japanese ninja certification exam attracts 131 candidates from Japan and abroad
Studio Ghibli store Donguri Republic announces opening of first-ever store in America
New Japanese overnight train coming to connect Tokyo with Tohoku in sleep-travel style
Japan launches first overnight Shinkansen bullet train between Tokyo and Osaka this summer
Japanese sweets shop sells an ohagi so exquisite it sells out by noon
Even at twice regular Daiso price, this handy item is still great for summer travel in Japan
Forget Tokyo go-karts – there’s a new way to sightsee on four wheels in Japan
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]