The white and black moths are the same species and thus the same population. Explain how you can have variation of a trait within a population? (think back to mendel genetics and punnett squares)

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

Which type of respiration takes place when there is no oxygen present

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. albino x albino a) 1/4 chinchilla, 3/4, agouti b) 3/4 albino, 1/4 chinchilla c) all albino