biology

RmYN02

RmYN02 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 RmYN02 rather than just read about it. In short: RmYN02 is a bat-derived strain of severe acute respiratory syndrome–related coronavirus. It was discovered in bat droppings collected between May and October 2019 from sites in Mengla County, Yunnan Province, China.

Key takeaways

RmYN02 belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect RmYN02 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of RmYN02 from memory before moving on to harder problems.

Reference excerpt

RmYN02 is a bat-derived strain of severe acute respiratory syndrome–related coronavirus. It was discovered in bat droppings collected between May and October 2019 from sites in Mengla County, Yunnan Province, China. It is the second-closest known relative of SARS-CoV-2, the virus strain that causes COVID-19, sharing 93.3% nucleotide identity at the scale of the complete virus genome. RmYN02 contains an insertion at the S1/S2 cleavage site in the spike protein, similar to SARS-CoV-2, suggesting that such insertion events can occur naturally. Other researchers have questioned the validity of this as an authentic furin cleavage site insertion, noting that it appears more likely to be a deletion of two amino acids at that locus.

Genetics It shares 93.3% genome with SARS-CoV-2. RmYN02 was 97.2% identical to SARS-CoV-2 in the 1ab. RmYN02 was 71.8% identical in nucleotide and 97.4% in amino acid to SARS-CoV-2 in the S gene, compared to 97.4% amino acid identity between RaTG13 and SARS-CoV-2. All genetic data were found by Weifeng Shi and his team.

Discovery RmYN02 was collected between May and July, 2019, in Yunnan by Professor Alice C. Hughes from Xishuangbanna Tropical Botanical Garden, and sequenced by Weifeng Shi from Shandong Medical University, based on an analysis of 302 feces samples collected from 227 bats that were collected from Mengla County, Yunnan Province, China, within a short distance from the Xishuangbanna Tropical Botanical Garden. The genome itself was assembled from a pool of 11 samples. A phylogenetic tree based on whole-genome sequences of SARS-CoV-2 and related coronaviruses is:

See also Bat SARS-like coronavirus RsSHC014 Bat SARS-like coronavirus WIV1

References

Worked examples

Example 1 — a first encounter with RmYN02

Start with the simplest possible case. Write down what RmYN02 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 RmYN02 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 RmYN02 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 RmYN02

In research: RmYN02 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 RmYN02 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: RmYN02 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Animal virology, Bat virome, Coronaviridae, so understanding it makes those chapters shorter.
In everyday life: Look for RmYN02 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 RmYN02 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what RmYN02 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 RmYN02 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is RmYN02 in simple terms?

Why does RmYN02 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 RmYN02?

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 RmYN02.