Who is a LUCA?

a theoretical extraterrestrial being
a the common ancestor of all current life on Earth
a hypothetical organism prehuman
a missing link in Darvin's theory of evolution
The last universal common ancestor (LUCA) is the most recent population of organisms from which all organisms now living on Earth have a common descent. LUCA is not thought to be the first living organism on Earth, but only one of many early organisms, whereas the others became extinct. In 2016 study identified a set of 355 genes inferred to have been present in LUCA. LUCA is estimated to have lived some 3.5 to 3.8 billion years ago in the Paleoarchean era.
Ts
0
Correct this question
4
Very interesting!
reach: rather globalbiologycuriositiesEarthgeneslifeprehistoryscience

Answers by country

a theoretical extraterrestrial being
a the common ancestor of all current life on Earth
a hypothetical organism prehuman
a missing link in Darvin's theory of evolution
answers
flagthe Netherlands
0%
61%
23%
14%
21
flagAustralia
20%
58%
8%
11%
34
flagthe United States
7%
47%
25%
16%
90
flagSwitzerland
0%
47%
21%
31%
19
flagGreece
0%
47%
17%
35%
17
flagAustria
10%
45%
15%
26%
57
flagGermany
11%
44%
13%
30%
236
flagRepublic of Ireland
21%
36%
15%
26%
19
flagthe United Kingdom
10%
35%
23%
25%
85
flagPakistan
23%
35%
17%
23%
17
flagIndia
10%
34%
27%
27%
138
flagPoland
15%
33%
18%
32%
2188
flagCanada
15%
30%
25%
30%
20
flagFrance
10%
30%
20%
40%
10
flagNigeria
9%
23%
42%
19%
21
flagEgypt
40%
10%
0%
50%
10