"for the most studied model microorganism, escherichia coli, how many genes in its genome still have no clearly defined functions?

google my dude. if it doesn't show up ask me.

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

here is your answer hope i .

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.