B2 noun #5,000 よく出る 3分で読める

mutation

A mutation is a change in something, like a living thing's DNA or a shift in how something looks or works.

Explanation at your level:

A mutation is a big change. Think of a caterpillar turning into a butterfly. That is a change. If something changes its shape or how it works, we can call it a mutation.

You can use mutation when something changes in a permanent way. In science class, you might learn that animals have DNA. If that DNA changes, we call it a genetic mutation. It makes the animal different.

The word mutation refers to a significant change. While it is most common in biology to describe DNA changes, you can also use it to describe a big shift in the nature of something. For example, if a small shop turns into a huge store, that is a mutation of the business model.

In formal English, mutation is a precise term. It implies an alteration that is structural. In biology, it is a change in genetic sequence. In other contexts, it suggests a transformation that is not just temporary but changes the identity of the object or system involved.

Mutation carries a nuance of evolution and adaptation. In academic writing, it is used to discuss how systems, languages, or biological entities transform over time. It is distinct from 'change' because it implies a deeper, often internal, modification that affects future generations or long-term function.

The term mutation sits at the intersection of biological science and metaphorical transformation. Historically, it denoted a simple 'moving' or 'changing' (from Latin mutare), but it has acquired a technical gravity. When used in literature or high-level discourse, it evokes the concept of metamorphosis or transmutation, suggesting that the core essence of the subject has been fundamentally rewritten.

30秒でわかる単語

  • Mutation is a permanent change.
  • Commonly used in biology for DNA.
  • Can be used metaphorically for big changes.
  • Pronounced myoo-TAY-shun.

Hey there! Let's talk about the word mutation. At its heart, it is all about change. Think of it as a permanent shift in the blueprint of something.

In the world of biology, a mutation happens when there is a typo in the genetic code of a living thing. Just like a typo in a book can change the story, these genetic changes can change how an organism grows or functions.

Outside of science, you might hear people use it to describe a major transformation in a company, a style, or even a piece of art. It’s not just a small tweak; it’s usually something that sticks around and changes the nature of the subject entirely.

The word mutation has a long journey through time. It comes from the Latin word mutatio, which literally means 'a changing' or 'an alteration'. This comes from the verb mutare, meaning 'to change'.

It entered Middle English via Old French in the 14th century. Back then, it was used more broadly to describe any kind of change or transition. It wasn't until the early 20th century, thanks to the work of scientists like Hugo de Vries, that the word became strictly linked to genetics.

Isn't it fascinating how a word that once described a simple change in a person's mood or a king's policy became the scientific term for the building blocks of life itself? Language is always evolving, just like the things it describes!

You will most often hear mutation in scientific or academic settings. When talking about biology, we often use it with verbs like undergo or cause. For example, 'The virus underwent a mutation.'

In casual conversation, you might hear it used metaphorically. If a business changes its entire strategy, someone might jokingly say, 'The company is going through a mutation.' However, be careful—using it outside of science can sound a bit dramatic or technical.

Common adjectives used with it include genetic, random, harmful, and beneficial. These help clarify what kind of change is happening and whether it is good or bad for the organism involved.

While there aren't many fixed idioms containing the word 'mutation', it is often used in descriptive phrases:

  • Genetic mutation: The most standard scientific phrase.
  • Undergo a mutation: Used to describe the process of change.
  • A radical mutation: Describes a very large, noticeable change.
  • Spontaneous mutation: A change that happens naturally without an outside cause.
  • Point mutation: A specific, small-scale change in DNA.

These phrases are mostly used in professional or educational contexts rather than everyday slang.

Mutation is a countable noun. You can have one mutation or many mutations. It is almost always used with the indefinite article 'a' or the definite article 'the'.

The pronunciation is myoo-TAY-shun. In the IPA, it is written as mjuːˈteɪʃən. The stress is on the second syllable, which is the 'TAY' part.

It rhymes with words like duration, creation, station, relation, and foundation. Notice the '-ation' suffix, which is very common in English for nouns that describe a process or result!

Fun Fact

The root 'mutare' is also the ancestor of the word 'commute'!

Pronunciation Guide

UK mjuːˈteɪʃən

Clear 'myoo' sound at the start.

US mjuːˈteɪʃən

Similar to UK, slightly more emphasis on 'TAY'.

Common Errors

  • Mispronouncing the 'u' as 'moo'
  • Putting stress on the first syllable
  • Dropping the 't' sound

Rhymes With

creation duration foundation relation station

Difficulty Rating

読解 2/5

Academic but common.

Writing 3/5

Requires context.

Speaking 2/5

Easy to pronounce.

リスニング 2/5

Clear sound.

What to Learn Next

Prerequisites

change cell gene

Learn Next

evolution adaptation genetics

上級

transmutation metamorphosis

Grammar to Know

Countable Nouns

a mutation, two mutations

Noun Suffixes

-ation for nouns

Subject-Verb Agreement

The mutation happens.

Examples by Level

1

The bug had a mutation.

bug = insect

Simple subject-verb.

2

It is a big change.

big = large

A1 basic.

3

The plant is different.

different = not the same

Adjective usage.

4

DNA has a mutation.

DNA = life code

Science term.

5

See the new shape.

shape = form

Imperative.

6

It is not normal.

normal = usual

Negative.

7

The cell changed.

cell = tiny life unit

Past tense.

8

Nature is complex.

nature = the world

Adjective.

1

The scientist studied the mutation.

2

Some mutations are good.

3

The virus had a small mutation.

4

Changes can be called mutations.

5

The animal looks very different.

6

He read about genetic mutations.

7

The mutation happened fast.

8

Is the mutation permanent?

1

The mutation was passed to the offspring.

2

Scientists track the mutation of the virus.

3

A random mutation can lead to new traits.

4

The company underwent a total mutation.

5

Many mutations have no effect at all.

6

The mutation changed the plant's color.

7

We are studying the rate of mutation.

8

The mutation is rare in this population.

1

The virus showed a significant mutation in its structure.

2

Evolution relies on the process of mutation.

3

The mutation occurred spontaneously in the lab.

4

He described the mutation as a 'genetic accident'.

5

The cultural mutation of the city was evident.

6

There is a high risk of a harmful mutation.

7

The mutation allows the bacteria to survive.

8

They are researching the cause of this mutation.

1

The rapid mutation of the strain baffled the researchers.

2

Genetic mutation is the engine of biological diversity.

3

The political landscape is undergoing a slow mutation.

4

She analyzed the mutation patterns in the data.

5

A single point mutation can have drastic effects.

6

The mutation was not fatal to the organism.

7

His theory on social mutation is quite controversial.

8

The mutation rate is influenced by radiation.

1

The transmutation of base metals is a myth, but biological mutation is a reality.

2

The mutation of the original text over centuries is fascinating.

3

Such a mutation in the policy reflects a shift in values.

4

The organism's mutation was a masterclass in adaptation.

5

We must account for the mutation of the virus in our model.

6

The mutation represents a departure from the ancestral form.

7

Is this change a mutation or a simple variation?

8

The mutation has rendered the gene inactive.

反対語

stability consistency stagnation

よく使う組み合わせ

genetic mutation
undergo a mutation
random mutation
harmful mutation
beneficial mutation
cause a mutation
track a mutation
spontaneous mutation
prevent a mutation
study a mutation

Idioms & Expressions

"undergo a mutation"

to experience a change

The project underwent a mutation.

formal

"genetic mutation"

a change in DNA

It is a genetic mutation.

neutral

"a radical mutation"

a huge change

The plan saw a radical mutation.

formal

"spontaneous mutation"

happening naturally

It was a spontaneous mutation.

formal

"point mutation"

a small specific change

The scientist found a point mutation.

formal

"beneficial mutation"

a helpful change

The mutation was beneficial.

neutral

Easily Confused

mutation vs Mutation vs Mutiny

Similar sounds

Mutation = change; Mutiny = rebellion

The mutation was small; the mutiny was huge.

mutation vs Mutation vs Variation

Both mean change

Mutation is structural; variation is a difference

A mutation is a type of variation.

mutation vs Mutation vs Adaptation

Both related to biology

Mutation is the cause; adaptation is the result

The mutation led to an adaptation.

mutation vs Mutation vs Transformation

Both mean change

Transformation is broader

The transformation of the room was great.

Sentence Patterns

B1

The mutation of [noun] is [adjective].

The mutation of the virus is fast.

B2

A mutation in [noun] causes [noun].

A mutation in the gene causes illness.

B1

The [noun] underwent a mutation.

The cell underwent a mutation.

A2

Scientists study the mutation of [noun].

Scientists study the mutation of DNA.

A1

It is a rare mutation.

It is a rare mutation.

語族

Nouns

mutant an organism with a mutation

Verbs

mutate to change genetically

Adjectives

mutated having undergone mutation

関連

evolution mutation drives evolution

How to Use It

frequency

7

Formality Scale

academic neutral casual slang

よくある間違い

Using 'mutation' for any small change Use 'change' or 'adjustment'
Mutation implies a deeper, structural change.
Confusing mutation with 'mutiny' Mutiny is a rebellion
They sound similar but mean totally different things.
Saying 'a mutation of' when you mean 'a mutation in' A mutation in the gene
Preposition usage is usually 'in' for biological contexts.
Thinking all mutations are bad Some are neutral or good
Mutations are just changes, not always harmful.
Using it as a verb Use 'mutate'
Mutation is the noun; mutate is the verb.

Tips

💡

Moo-tation

Remember the cow sound.

💡

Science Context

Use it primarily for biology.

🌍

Sci-Fi

Think of X-Men.

💡

Noun vs Verb

Mutation (noun) vs Mutate (verb).

💡

Stress

Stress the second syllable.

💡

Not for everything

Don't use it for minor changes.

💡

Latin Roots

It comes from 'mutare'.

💡

Flashcards

Pair with 'DNA'.

Memorize It

Mnemonic

Moo-tation: A cow (moo) that changes its spots!

Visual Association

A DNA strand changing colors.

Word Web

DNA Change Evolution Science Biology

チャレンジ

Try to explain a change in your life using the word mutation.

語源

Latin

Original meaning: A changing or alteration

文化的な背景

Can be sensitive when discussing human health or genetic conditions.

Often used in sci-fi and pop culture to describe 'superpowers'.

X-Men (Marvel) Teenage Mutant Ninja Turtles

Practice in Real Life

Real-World Contexts

Science Class

  • genetic mutation
  • DNA sequence
  • study the mutation

Doctor's Office

  • genetic test
  • mutation risk
  • inherited mutation

Sci-Fi Movie

  • superhuman mutation
  • lab accident
  • strange transformation

Business Meeting

  • radical mutation
  • change in strategy
  • systemic mutation

Conversation Starters

"Have you ever heard about genetic mutations?"

"Do you think mutations are always bad?"

"What is the most interesting mutation you know of?"

"How does mutation relate to evolution?"

"Can you think of a company that went through a 'mutation'?"

Journal Prompts

Write about a change in your life that felt like a 'mutation'.

If you could have a 'mutation' that gave you a superpower, what would it be?

Explain the difference between a simple change and a mutation.

How do you feel about the way science uses the word mutation?

よくある質問

8 問

No, many are neutral.

It's better to use 'change' or 'makeover'.

No, the verb is 'mutate'.

myoo-TAY-shun.

It is very common in science.

Metaphorically, yes.

Mutations.

No, mutation is a cause of evolution.

自分をテスト

fill blank A1

The ___ changed the plant.

正解! おしい! 正解: mutation

Mutation is the change.

multiple choice A2

What is a mutation?

正解! おしい! 正解: A change

Mutation means change.

true false B1

All mutations are harmful.

正解! おしい! 正解: 間違い

Some are neutral or beneficial.

match pairs B1

Word

意味

All matched!

Noun vs Verb.

sentence order B2

下の単語をタップして文を組み立てよう
正解! おしい! 正解:

Standard sentence structure.

スコア: /5

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