---
title: About 8 percent of human DNA is made of bits of old viruses that got… — The microscopic world: viruses and vaccines · tree and pragmatics
description: About 8 percent of human DNA is made of bits of old viruses that got into our ancestors long ago. Who acts: old viruses. A sentence of the lesson «The microscopic world: viruses and vaccines» of the biology course of Mova's primary school with its dependency tree and the pragmatics of every clause.
---

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# The microscopic world: viruses and vaccines, sentence 17

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About 8 percent of human DNA is made of bits of old viruses that got into our ancestors long ago.

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**Who acts:** old viruses · **What happens:** make, get · **To what, where:** 8 percent, ancestors

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This is a sentence of the lesson «The microscopic world: viruses and vaccines» of the biology course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (old viruses), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:biology:258-the-microscopic-world-viruses-and-vaccines.lesson:17
# text = About 8 percent of human DNA is made of bits of old viruses that got into our ancestors long ago.
# source = school lesson (ours)
# course = biology
# lesson = 258-the-microscopic-world-viruses-and-vaccines.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change
1	About	about	ADV	RB	_	2	advmod	_	_
2	8	8	NUM	CD	NumForm=Digit|NumType=Card	3	nummod	_	_
3	percent	percent	NOUN	NN	Number=Sing	8	nsubj:pass	_	_
4	of	of	ADP	IN	_	6	case	_	_
5	human	human	ADJ	JJ	Degree=Pos	6	amod	_	_
6	DNA	DNA	NOUN	NN	Number=Sing	3	nmod	_	_
7	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	aux:pass	_	_
8	made	make	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
9	of	of	ADP	IN	_	10	case	_	_
10	bits	bit	NOUN	NNS	Number=Plur	8	obl	_	_
11	of	of	ADP	IN	_	13	case	_	_
12	old	old	ADJ	JJ	Degree=Pos	13	amod	_	_
13	viruses	virus	NOUN	NNS	Number=Plur	10	nmod	_	_
14	that	that	PRON	WDT	PronType=Rel	15	nsubj	_	_
15	got	get	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	13	acl:relcl	_	_
16	into	into	ADP	IN	_	18	case	_	_
17	our	our	PRON	PRP$	Case=Gen|Number=Plur|Person=1|Poss=Yes|PronType=Prs	18	nmod:poss	_	_
18	ancestors	ancestor	NOUN	NNS	Number=Plur	15	obl	_	_
19	long	long	ADV	RB	Degree=Pos	20	advmod	_	_
20	ago	ago	ADV	RB	_	15	advmod	_	_
21	.	.	PUNCT	.	_	8	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present · passive |  | 8 percent of human DNA |  |  |  | of bits of old viruses | vn build-26.1-1 «NP.asset V NP»: subject=Product |
| 2 | **get** | past | old viruses |  |  | our ancestors |  | ago *property* | vn escape-51.1 «NP V PP.destination»: agent=Theme into ancestor=Destination |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:biology:258-the-microscopic-world-viruses-and-vaccines.lesson:17`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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