Which is not true about the chromosomes of a multicellular organism?
a. they are made up of dna and protein.
b. each chromosome is replicated into two chromatids during the s phase of interphase.
c. each chromosome separates into two daughter chromosomes by binary fission.
d. all cells contain chromosomes that carry the same genetic information.

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?

What is the difference between an igneous, sedimentary and metamorphic rock

1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis