If 2 spot (S) is dominant to 4 spot (s), give the genotypes for the parents in the following crosses:
(a) 2 spot × 2 spot yields 2 spot and 4 spot
(b) 2 spot × 4 spot yields only 2 spot
(c) 2 spot × 4 spot yields 2 spot and 4 spot
(d) 2 spot × 2 spot yields only 2 spot
(e) 4 spot × 4 spot yields only 4 spot What will be an ideal response?
ANSWER: (a) Ss x Ss -- S__ + ss
(b) SS x ss -- Ss
(c) Ss x ss -- Ss + ss
(d) SS x S__ -- S__
(e) ss x -- ss
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