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Biology - Gene Mapping - Results

Gene mapping - Results

Instead of the expected ratio of 1:1:1:1 of phenotypes [1] being observed
in the offspring, unexpected results were obtained. If it is assumed that
the genes for wing colour and size are actually on the same chromosome [2]
(rather than separate ones) but fairly widely separated, the first parent
P1 would mostly have GW or gw genotype. [3] Exchanging the ends of the
chromosomes during meiosis [4] (crossing over) [5] would give the
recombinant gametes [6] Gw and gW.

Gametes with the same combination of alleles [7] as the parent are called
parental. Those with new combinations of alleles are called recombinant.

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Links:
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[1] http://alison.com/#
[2] http://alison.com/#
[3] http://alison.com/#
[4] http://alison.com/#
[5] http://alison.com/#
[6] http://alison.com/#
[7] http://alison.com/#