Vegetative Propogation = The production of structures in an organism that can grow into new individual organisms. These offspring contain the same genetic info as the parent and so are clones of the parent.
Asexual reproduction in English Elm (Ulmus procera) = During stress such as disease or burning, formation of root suckers or basal sprouts occurs from meristem tissue in the trunk close to the ground where least damage occurs. The suckers grow in a circle around the tree called the clonal patch.
English Elm Disease = fungal infection cause by bark beetle. There is no genetic variation within the cloned population so natural selection cannot occur.
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