Answer
No. An example is the test cross of Drosophilia
flies which gives a ratio of 6:6:1:1 for the body colour and the size of
wings. If the test cross follow Mendel’s Second Law, it will give a ratio of
1:1:1:1. The gene of the body colour and the size of wing are linked. When test
cross occur, this result in the majority progeny of having the parental
genotype and phenotype. Four types of progeny are produced. A small number of
crossing over has occur resulting in new genetics combinations of linked gene
in some gametes.
Assignment submitted by L.Y., Kong, S. H., Lim, S. C., Soo, C. W. Tan and C.C.,Teh 2011/2012 (IBM)
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