Final answer:
Y-linked traits are characteristics passed exclusively from fathers to sons as they are associated with genes on the Y chromosome, which is only present in males.
Step-by-step explanation:
The characteristics that are found only in males and are passed from father to all sons are Y-linked traits. Y-linked traits are associated with genes located on the Y chromosome. Since only males have a Y chromosome, and they only pass this Y chromosome to their sons, traits linked to the Y chromosome are exclusively transmitted from fathers to sons. In contrast, X-linked traits are related to genes on the X chromosome and can be passed by mothers to both sons and daughters, or by fathers to daughters only. Autosomal traits are found on the non-sex chromosomes and can be inherited from either parent to any child, regardless of sex. Dominant traits simply refer to those traits that will be expressed if at least one dominant allele is present and do not imply any particular pattern of inheritance related to sex chromosomes.