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23/09/2020 6:42 pm
Topic starter
Gene which suppresses other gene’s activity but does not lie on the same locus is called as
(a) epistatic
(b) supplementary
(c) hypostatic
(d) codominant
1 Answer
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23/09/2020 6:45 pm
(a) epistatic
Explanation:
When one gene masks the effect or activity of another gene which does not lie on the same locus, it is called epistasis. Epistasis refers to non- allelic interactions. Like coat colour in mice is controlled by epistatic gene. When coloured (CCaa) mouse is crossed with albino (ccAA), agouti mice (ccAa) appeared in F1 generation. Agouti, coloured and albino mice are obtained in 9 : 3 : 4 ratio in F2 generation.
Agouti - 9
Coloured - 3
Albino - 4
Ratio - 9 : 3 : 4