astronomy

Harris Lewin

Harris Lewin is a astronomy 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 Harris Lewin rather than just read about it. In short: Harris A. Lewin, an American biologist, is a professor of evolution and ecology and Robert and Rosabel Osborne Endowed Chair at the University of California, Davis.

Key takeaways

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

Reference excerpt

Harris A. Lewin, an American biologist, is a professor of evolution and ecology and Robert and Rosabel Osborne Endowed Chair at the University of California, Davis. He is a member of the National Academy of Sciences. In 2011, Lewin won the Wolf Prize in Agriculture for his research into cattle genomics. Lewin chairs the working group for the Earth BioGenome Project, a moonshot for biology that aims to sequence, catalog, and characterize the genomes of all of Earth’s eukaryotic biodiversity over a period of 10 years. Lewin is a founding co-editor of the Annual Review of Animal Biosciences, first published in 2013.

Career Lewin studied at Cornell University and earned his B.S. in Animal Science in 1979 and M.S. in Animal Breeding and Genetics in 1981. He was awarded his Ph.D. in Immunology from the University of California, Davis in 1984. He then worked at the University of Illinois. In 2003, he served as the founding director of the Carl R. Woese Institute for Genomic Biology. In 2009, he and a team of researchers fully sequenced the cow genome. Lewin served as vice chancellor for research at University of California, Davis from 2011 until 2016. In 2016 he returned to the faculty in the University of California, Davis Department of Evolution and Ecology and the Genome Center. Lewin is a member of a group biologists that propose to sequence the DNA of all life on Earth. Lewin was senior author of a study that revealed one of the most prolific bulls in the history of Holstein cattle breeding, Pawnee Farm Arlinda Chief, had a lethal gene mutation estimated to have caused half million spontaneous cow abortions worldwide. Lewin collaborated with researchers from the Institut National de la Recherche Agronomique in France for a study that used RNA-sequencing to highlight problems with gene expression in cloned cattle. In a study published in the Proceedings of the National Academy of Sciences, Lewin and his colleagues used an algorithm to computationally recreate the chromosomes of the first eutherian mammal, the long-extinct, shrewlike ancestor of all placental mammals. At the 48th World Economic Forum Annual Meeting in Davos-Klosters, Switzerland, Lewin announced a landmark partnership between the Earth BioGenome Project and the Earth Bank of Codes to map the DNA of all the planet’s eukaryotes, some 1.5 million known species. Lewin was the lead author for a perspective paper published April 23, 2018 in the Proceedings of the National Academy of Sciences, "Earth BioGenome Project: Sequencing life for the future of life." In the paper, the 24 interdisciplinary experts who comprise the Earth BioGenome Project Working Group, outline a roadmap and rational for the project, which is estimated to cost $4.7 billion and take ten years.

References

Worked examples

Example 1 — a first encounter with Harris Lewin

Start with the simplest possible case. Write down what Harris Lewin claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Harris Lewin 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 Harris Lewin 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 Harris Lewin

In research: Harris Lewin appears in astronomy 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 Harris Lewin 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: Harris Lewin is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1957 births, 21st-century American biologists, Annual Reviews (publisher) editors, so understanding it makes those chapters shorter.
In everyday life: Look for Harris Lewin 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 Harris Lewin in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Harris Lewin 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 Harris Lewin out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Harris Lewin in simple terms?

Harris A. Lewin, an American biologist, is a professor of evolution and ecology and Robert and Rosabel Osborne Endowed Chair at the University of California, Davis.

Why does Harris Lewin matter?

Because it connects several astronomy 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 Harris Lewin?

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 Harris Lewin.