biology

Kerstin Johannesson

Kerstin Johannesson is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Kerstin Johannesson rather than just read about it. In short: Kerstin Johannesson (born 1955) is a Swedish biologist. She works at the University of Gothenburg, where she researches marine periwinkles as model systems for marine evolution.

Key takeaways

Kerstin Johannesson belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Kerstin Johannesson to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Kerstin Johannesson from memory before moving on to harder problems.

Reference excerpt

Kerstin Johannesson (born 1955) is a Swedish biologist. She works at the University of Gothenburg, where she researches marine periwinkles as model systems for marine evolution. In 2022 Johannesson won the Molecular Ecology Prize. She is an elected member of the Royal Swedish Academy of Sciences.

Life From the age of fifteen, Johannesson resided on the island of Tjärnö in Strömstad Municipality during the summer, where the University of Gothenburg's Tjärnö Marine Biological Laboratory was located. Living on Tjärnö inspired Johannesson's interest in marine sciences, and she later attended the University of Gothenburg to study biology, despite her school career counsellor recommending she become a hairdresser instead. She earned her PhD at Gothenburg, supervised by Dave Raffaelli and Bob Ward. She subsequently joined the University of Gothenburg's faculty, and became an elected member of the Royal Swedish Academy of Sciences. Johannesson's research focuses on the use of marine periwinkles (especially Littorina saxatilis and L. fabalis) as model systems to understand evolutionary biology. She has long-term research studies based at Tjärnö Marine Biological Laboratory, but has also contributed to work to understand evolution in the low-salinity environment of the Baltic Sea. In 2016 Johannesson won the Swedish Kunskapspriset award, which rewards science communication. Johannesson led a children's television programme, Havsforskarna, about marine biology. In 2022 Johannesson won the Molecular Ecology Prize.

References

Illustrations

Worked examples

Example 1 — a first encounter with Kerstin Johannesson

Start with the simplest possible case. Write down what Kerstin Johannesson claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Kerstin Johannesson before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Kerstin Johannesson ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Kerstin Johannesson

In research: Kerstin Johannesson appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Kerstin Johannesson in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Kerstin Johannesson is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1955 births, 20th-century Swedish biologists, 21st-century Swedish biologists, so understanding it makes those chapters shorter.
In everyday life: Look for Kerstin Johannesson outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Kerstin Johannesson in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Kerstin Johannesson means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Kerstin Johannesson out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Kerstin Johannesson in simple terms?

Kerstin Johannesson (born 1955) is a Swedish biologist. She works at the University of Gothenburg, where she researches marine periwinkles as model systems for marine evolution.

Why does Kerstin Johannesson matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Kerstin Johannesson?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Kerstin Johannesson.