Answer:
A) One band of intermediate density and one band of heavy density.
Explanation:
According to semi conservative model of replication the two DNA strands separate during replication such that the new DNA molecule has one parental strand and one new strand. In this experiment, originally E.Coli cells were grown in 14N medium so all the DNA strands had 14N. When the medium was changed to 15N, only 15N would be available to the cells for replication.
After first round of replication all DNA molecules would be of intermediate density as one strand would be old 14N strand and another would be new 15N strand. After second round of replication 15N strand would be formed from both 14N strand and 15N strand. So, one band will be formed of intermediate density (14N-15N) and another would be of heavier density (15N-15N).
<span>Two characteristics of leisure travelers is that they often will travel by car, and generally they take shorter trips. The whole idea of leisure travel is to take a little vacation from the chores of everyday life. It is generally characterized as people staying in nice hotels, relaxing, touring, and experiencing something new, fun and exciting.</span>
During transcription process in the nucleus, the information for synthesis of a particular protein is copied on to mRNA.
mRNA then leaves the nucleus with this information in code, and enters the cytoplasm and attaches to a ribosome. Ribosome are the "work benches" of the cell and it is here that proteins are made.
In the ribosome, transfer RNA or tRNA recognizes a triplet of bases e.g. GCA on the attached mRNA and decodes it. This is called the translation process. Once tRNA has determined which amino acid corresponds to that triplet, it fetches that amino acid from the pool of free amino acids in the cytoplasm and into the ribosome where it is linked with other amino acids into a chain to form the protein.
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Basic units of all forms of life is D, the cell. Cells can be found in any living thing.
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This mammal is found in open and semi-open habitats, especially grasslands with scattered bushes and trees, in south, central-west, and southeastern Brazil, Paraguay, northern Argentina, Bolivia east and north of the Andes,[4] and far southeastern Peru (Pampas del Heath only).[5] It is very rare in Uruguay, possibly being displaced completely through loss of habitat.
