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Genetics 6(1)
Recombination...
8
Biology
Undergraduate 3
04/10/2012

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Term
The genetic recombinants in the E. coli experiment had ________ that were intermediate between the heavy and light parents
Definition
densities
Term
Heteroduplex region
Definition
segment of a DNA molecule located between the two breakpoints.
Term
heteroduplex region of a recombinant molecule.
Definition
the region lies between portions of a chromosome derived from alternative parental homologues after crossing over.
Term
heteroduplex region of a noncrossover molecule
Definition
this is a region left behind after a crossover attempt. Sequences from both parental molecule are found on both sides of the heteroduplex region.
Term
Gene conversion- an aborted crossover during meiosis leaves behind_________
Definition
two heteroduplex regions with mismatched bases.
Term
Mismatch repair- ______ ____ ____ eliminates mismatches and converts both heteroduplexes into an 'a' allele
Definition
DNA repair enzyme
Term
Resulting tetrad
Definition
shows a 1:3 ratio of A:a alleles.
Term
Recombination- step 1-
Definition
'Nicking' or a break in the double strand. Breaking the phosphodiester bonds.
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