Proteins are broken down to form ammonia, which is toxic to cells. in which organ of the body is this ammonia converted to the less toxic compound urea?

i don't know what the picture looks like but i can take a guess and say maybe basidiomycetes?

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.