the characteristics which are passed on by to a offspring by its parents
the answer is heredity
An organism with two like genes for a trait is called homozygous for that trait.
A swine offspring is called a piglet.
A canine offspring is called a puppy.
Offspring of ducks are called "ducklings" and that of geese are called "goslings."
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F2 refers to the F2 generation in genetics. First you have the P1 generation, or the 1st parents to cross. Next, their offspring is called the F1 generation. When the F1 generation offspring cross, then the F2 generation appears.
A Mares' offspring is called a "Foal".
Pigs offspring are called piglets.
The offspring of different animals are known by different names- for example the oppsring of a Lion is called a cub, that of a cow is called a calf and so on.
The visible trait an offspring exhibits is called the phenotype.
A whales offspring, is called a calf.