A

accident = an unpredicted go
aka = also known as
ancestor = a generator
ants and aunts = soundalikes (not always what you expect)
awakening = crucial moment

B

bed = not always a resting place
birth certificate = proof of existence
bones = remains of the past

C

chromosome = a visible carrier in witness of genetic information
coccyx = tail of many theories

D

dinosaur = prehistoric animal, whatever prehistoric means...
dixie, a = a mobile kitchen in old English
DNA = cell bricks
document = irrefutable proof when not faked

E

earth = plane jet around the sun
epithaph = written on a grave

F

family likeness = same looks
family trait = unexplainable same attitude (for now)

G

gen ethics = the dream factory
gene = a determinant factor
genealogy = the logic of genes or family trees unrevealed
genius = an exceptional gene

H

handwriting = to be deciphered most of the time
history = the course of events depends on viewpoints

L

layed = laid
librarian = not irrefutable either
library = can be public or private
lines = direct or indirect ones

M

map = portfolio with share or share not option
mathematical unknown = the real one is never solved

N

name = there is more to it at second sight
neurologist = an expert in flipping nerves
Nosey Nelly = American for Nosey Parker = curious Lulu
 (said from an adult it becomes offensive)

P

photograph = the writing of light
puzzle = pieces that seem to belong or fit together

R

reason = very different from reasoning or argumentation

S

scrapbook = more than just pictures
shrunk = headshrinker = psychiatrist
sound-and-light = another spelling for soundalike
soundex = unisonant arrangements
South, The = Dixieland
subconscious = another level of science
sun = star of the milky way

U

the unexpected factor = very often the determining one

XYZ

X and Y = gender factors
yonder = not always heaven