a student states that only a male human offspring can express a recessive sex-linked X chromosome mutation. Is this statement accurate? Explain.

yes . Xx chromosome is a boy

XY is a girl ..

answer; i believe its (ovulation);

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.