Sc160 Basic Biology

454 Words2 Pages
SC160.2.2 Basic Biology Assignment 04 10/15/2012 Topic: Discuss the issues related to genetic diversity: mutations, sexual reproduction, migration, and population size. Diversity has been the subject for many years. The subject of differences of species, subspecies, and even humans have peeked scientists interest; as we continue to find more proof of even other cultures that existed. What are genetic mutations? How does sexual reproduction play into genetic diversity? How to migratory patterns affect population size? All of these are questions that scientists attempt to answer every day. According to the textbook, “Mutations introduce new genetic information into a population by modifying alleles that are already present.” (Enger, Ross & Bailey, 2008) . The way that animals interact within their own habitat is mostly attributed to their individual genetic mutations. For example, the common cow's digestive system is attributed to their need to eat and walk within the herd communities. This allowed for them to be less vulnerable to predator attacks. Naturally because all animals do not have this specific eating pattern, I would imagine it was from a form of positive mutation that was need specific. Sexual reproduction is also is an attribute of biological diversity. The mixing of two different unique individual animals within the same species can create new breeds that prosper in different environments. This is the main reason there are so many breeds of dogs today; the need for a unique characteristic was fulfilled by the strategic sexual reproduction attempts by their owners. Even today, breeds like the Labradoodle (cross between Labrador and Poodle), are created for their hypoallergenic properties, and drive to retrieve. Page2 “The migration of individuals from one genetically distinct population to another is also an important way for
Open Document