The most common and most likely answer to this crossword clue is the 5 letter word GENUS
I've seen this crossword clue in The Times
G
E
N
U
S
More clues leading to the result GENUS
- Kind of an Einstein? Not I
- Information supplied by American group
- Member of family has information on us
- Part of the family's great talent avoiding one
- Class bright guy I snubbed
- Class brainbox lacks ego
- Information on American group
- Class benders
- Star for example going around in group
- Kind spirit absolving one
Buddy explains!

The straight part
We know that "Part of the family" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case part of the family = genus.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GENUS mean?
GENUS noun- A rank in the classification of organisms, below family and above species; a taxon at that rank.
- A group with common attributes.
- A natural number representing any of several related measures of the complexity of a given manifold or graph.
- Within a definition, a broader category of the defined concept.