Explain the terms: $(i)$ Saltation and $(ii)$ Founder effect.

(N/A) $(i)$ Saltation: According to Hugo de Vries,evolution is caused by large,sudden,and heritable mutations,which he termed as saltation (single-step large mutation).
$(ii)$ Founder effect: When a small group of individuals from a large population migrates to a new habitat or becomes isolated,the allele frequencies in the new population differ from the original population. This change in allele frequency due to genetic drift is known as the founder effect.