. In the 12 generation, a 9:4:3 phenotypic ratio results fro: al codoninance-two
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Question
. In the 12 generation, a 9:4:3 phenotypic ratio results fro: al codoninance-two çene pa:rs b) cospiete domir.ance- one gene pair ci lethality d) epistasis-tuo cese pairs e) epiotanin-three gune pairs 10. The pur centage ct ?2dividuals-at snow at -eas: scre degree of expresntor of a sutait phenotype Ls: a] penetrance b) secessisenone ) alvays 100i di expressivity 11. Tn hronophila, nornal ing is dosinan: to vestigial ving. This tiles vere croesed to kenozypeias wild yen flies, and the F1 flies vere crossed to homczyeous vesticial wing tiles, the offsprirg would be bi 1/2 E? rmal wiEJi ?/2 vestigial ?..2g 1/2 tmial ing Cemalea: 1/2 vrtigial vinged males d3/4 vest-gial virg: 1/4 normal ng If tve carriers marey ane have to childrer, wats the probability that bota woula ba tealtay? a) 3/4 b) 14 ) /16 ) 5716:56Explanation / Answer
Ans 9 : d) epistasis - two gene pairs
When the alleles of one gene masks the expression of alleles of the other gene , it is called as epistasis.
The modified ratio of such a dihybrid cross that involves two gene pairs is 9:4:3.
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