Pertaining to direct descent from ancestors (6)

I believe the answer is:

lineal

(Other definitions for lineal that I've seen before include "Transmitted by direct descent" , "In a direct line of descent" , "In a line as, say, a descendant" , "Having only one dimension" , "In line of descendants" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.