Concept:Heredity is the passing of traits from both parents to offspring through genes.
Explanation:In heredity, traits are carried by genes located on chromosomes.
These genes are present in the ovum and the sperm, which are the gametes.
Traits are transmitted from parents to offspring through fertilisation.
However, traits are not always inherited from only one parent.
Normally, offspring receive one set of genes from each parent, so both parents contribute to the traits.
Therefore, the statement that traits are always transmitted by one parent is false.
Answer:C. always transmitted by one parent