BIOL-2171L-W1/W2- Lab for Biol 2171 Biology ents Quizzes Discussions Classlist G

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BIOL-2171L-W1/W2- Lab for Biol 2171 Biology ents Quizzes Discussions Classlist Grades Library Other ToolsImportant Links nd Basic Genetics Bshayer Alsaleh: Attempt 1 Question 2 (1 point) Match the type of epistasis with the correct explanation? 1 (aa) on a single locus mask the phenotypic expression of other gene locus (BB, Bb or bb). Alleles of locus 'B express themselves only when epistatic locus 'A' has dominant allele like AA or Aa 39:7 1. Dominant epistasis 2When both the dominant alleles are present together, only then they can complement each other. 2. Duplicate recessive genes Phenotypic ratio of Duplicate recessive genes 3. When dn minant allele 'A

Explanation / Answer

Dominant epistasis: when dominant allele A masks the expression of B. A is epistatic gene of B. it can express itself in presence of B or b. B can express itself only in presence of aa.

Duplicate recessive genes phenotypic ratio: 9:7

Duplicate recessive genes: it is result of complementary epistasis. when both dominat alles are present only then they can complement for each other

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