1. A !! Its Mesozoic era and Jurassic period !!
2.B !! Archaeopteryx led to evolution of birds as they are connecting link between birds and reptiles.
3.B !! Very popular to be known , dinosaurs extinct due to metroites collision !!
Answer:
The sequence of the nucleotides along the backbone encodes genetic information. The four roles DNA plays are replication, encoding information, mutation/recombination and gene expression.
Explanation:
The answer is Topoisomerase.
<span>Topoisomerase is an enzyme with the role to regulate the overtwisting or </span>undertwisting<span> of DNA helix. If DNA helix is untwisted, topoisomerases will regulate this situation and will twist DNA helix.</span>
Nuclease<span> is an enzyme that cleaves the sequences of nucleic acids into smaller units.</span>
<span>Telomerase is an enzyme that adds specific sequence to the telomere ends.</span>
Any characteristic, whether a physical trait, a behaviour, a physiological adaptation etc can make an organism more or less likely to survive in a particular environment.
<span>A dark colour could help a rabbit survive if it lives in a dark forest, because predators can't see it so well, but it would be less likely to survive in the arctic, where the environment is all white and it would show up. </span>
<span>In terms of the characteristics, think about: does it help the organism get food? Does it help protect the organism from predators? If it does, that organism is more likely to survive, and pass the characteristic on to it's offspring. If a bacterium has a characteristic of not being killed by antibiotics, this will help it to survive and breed.</span>
