Why are orthologous genes preferred over paralogous genes when constructing phylogenetic trees?

Paralogous genes are more likely to undergo horizontal gene transfer, complicating phylogenetic analysis.

Paralogous genes tend to have more conserved sequences than orthologous genes.

Orthologous genes are always shorter in sequence length compared to paralogous genes.

Orthologous genes reflect evolutionary events such as speciation, while paralogous genes may reflect duplication events within the same lineage.