Allopatric<span> speciation occurs when new species arise as a result of geographic isolation from the ancestral species. It involves an extrinsic barrier to gene exchange and can occur by a number of means including subdivision or peripheral division.</span>
<span>A biochemist modified a protein so the amino acid lysine occurred where the amino acid aspartic acid previously occurred. this change could ...
</span>alter the protein's tertiary structure. Hope this Helps