During mitosis, a double-stranded chromosome is attached to a spindle fibre at the: A centriole. B centrosome. C centromere. D chromatid.

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

Below, the levels of organization in a multicellular organism are shown from least to most complex. which level of organization can be described as several different types of tissues working together to perform a common task?

What is the farthest destination to date for a human spaceflight mission?