Why was thomas morgan's work with fruit flies important?
It showed that the father played an important role in determining the sex-linked traits of offspring.
Fruit Flies can sense other types of food too, like grains or vegetables. Also its very important to note that fruit flies do not only breed on fruit. Any sugary substance or even your rubbish bins can be perfect places for fruit flies. More information can be found here: http://www.thebugsquad.com/fruit-flies/how-to-get-rid-of-fruit-flies
What conclusions did Morgan arrive at with his experiments on fruit flies and why did they extend Mendel's conclusions?
they dont well actually some fruit flies do. it depends on if they are a mutant type of fruit fly or not. there are also flies that have messed up wings, these types of flies are called vestigial. there are also fruit flies that don't even have eyes. all of these types of fruit flies are mutants and are used for testing.
They come from eggs that might be laid in rotten food substances. It takes 48 hours for them to turn into fruit flies, that is why it seams that they come from nowhere when all it is is that they reproduce really fast. For more information try this link: http://www.thebugsquad.com/fruit-flies/where-do-fruit-flies-come-from