Molecular Recombination

The Holliday Junction molecule:

• A.

  Has a region of heteroduplex.

• B.

  Is an intermediate in recombination.

• C.

  Can lead to gene conversion.

• D.

  Can lead to crossing over.

• E.

  All of the above.

The Holliday Junction molecule has a region of double stranded DNA in which one strand comes from one homologous chromosome and the other strand comes from the other homologous chromosome. This is called the _______ region.

_______ is asymmetrical recombination which occurs due to heteroduplex DNA with a mismatched base pair on both helices, and in which the mismatch is repaired to the same base pair on both helices.

When a(n) _______ E. coli cell conjugates with an F- cell, chromosomal DNA is transferred to the F- cell.

Since E. coli's chromosome map was determine by difference in time between transfer of different genes during Hfr conjugation, the standard map unit of E. coli chromosome map is the _____.

The transfer of an F' plasmid to an F-  cell is called _________.

The transfer of chromosomal genes from one bacterium to another bacterium via a bacteriophage is called __________.