Klinefelter's syndrome is a result of which of the following
nondisjunction mutations?
A. deletion of chromosome 5
B. only an X chromosome
C. two X chromosomes and a Y
D. three copies of the 21st chromosome

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

Were you able to observe the nucleolus in any of the cells if so which ones

Which statement explains how gravity and intertia work together