The Hox genes came to regulate each of the following in what sequence, from earliest to most recent?

1. identity and position of paired appendages in protostome embryos

2. formation of water channels in sponges

3. anterior-posterior orientation of segments in protostome embryos

4. positioning of tentacles in cnidarians

5. anterior-posterior orientation in vertebrate embryos

#Question id: 3666

#Section 3: Genetics, Cellular and Molecular Biology

RNA-directed RNA polymerase, used in replication of some RNA viruses termed as:

#Question id: 3667

#Section 3: Genetics, Cellular and Molecular Biology

In an ______________ plasmid, replication occurs in two stages. In the first stage, the double stranded circular plasmid DNA replicates to form another double-stranded circular DNA and a single-stranded circular DNA, In the second stage, the complementary strand is synthesized on the single-stranded DNA to make another double-stranded DNA.

#Question id: 3668

#Section 3: Genetics, Cellular and Molecular Biology

In most plasmids, the genes for proteins required for replication are located very close to the ______________ at which their gene are transcribed.

#Question id: 3670

#Section 3: Genetics, Cellular and Molecular Biology

The best-known examples of host-encoded site-specific recombination systems used to resolve plasmid dimers are the cer-XerCD site-specific recombination systems used by the

#Question id: 3671

#Section 3: Genetics, Cellular and Molecular Biology

_____________ promotes recombination between specific sites on the plasmid if the same site occurs more than once in the molecule, as it would in a dimer or multimer.

#Question id: 3672

#Section 3: Genetics, Cellular and Molecular Biology

During initiation of replication