Answer:

genes

Answer	Crossword Clue
GENES	Objects of splicing, perhaps
GENES	Autry and Rayburn
GENES	Heredity factors

GENES	Units of inheritance
GENES	Mendel studied them
GENES	Relayers of traits
GENES	Heredity units
GENES	Kelly and Rayburn
GENES	Trait makers
GENES	Character parts
GENES	Pool components

GENES	Trait carriers
GENES	Code carriers
GENES	Parental endowments
GENES	Sources of blue eyes, say
GENES	They're found in pools
GENES	Chromosome components
GENES	Heredity elements
GENES	They're in the pool

GENES	Characteristic carriers
GENES	Heredity carriers
GENES	They're found in some pools
GENES	Character builders?
GENES	Character parts?
GENES	Inheritance units
GENES	Part of one's inheritance?
GENES	They're passed on from father to son

GENES	Pool contents?
GENES	Units of heredity
GENES	Parents pass them on
GENES	Pool items
GENES	They're part of a pool
GENES	Heredity, so to speak
GENES	Cloning units
GENES	Inheritance from one's parents?

GENES	Contents of some pools
GENES	Inheritance of a sort
GENES	Life determinants
GENES	Hereditary determinants
GENES	Eye color determinants