Answer:
One strand of all the isolated DNA double helices would have C-14 labeled thymidine.
Explanation:
DNA replication is a semiconservative process which means that each newly formed DNA double helix contains one parental strand and one newly formed strand.
Since the medium has thymidine labeled with C-14, all the newly formed strands formed during DNA replication would have radio-labeled thymidine.
Therefore, by the end of 20 minutes, one out of two strands on each double helix would have labeled thymidine nucleotides.
It wouldn't be A because the animals wouldn't really be bothered by each other in the first place. They're not in the same ecosystems..
It wouldn't be D because these animals would be ranked the same if they were in the same phylum.
It could be C, but it's not because there is a variety of other resources for them to use.
I think B would be the best answer because they are fighting each other for the same resource. You need that resource in order to survive and so does that other organism, so of course both organisms would be fighting over it in order to live
hope this helps!
Answer:
C.
pump blood, which carries nutrients and oxygen to the cells of the body.
The correct option is ANALOGOUS STRUCTURES.
Analogous structures are structures that are similar because of the functions they carry out and because of their external appearance. But these structures are different internally.<span />
