NEST2016BiologyPrinciples of Inheritance and Variation
In order to study the lysine biosynthetic pathway in yeast, lysine auxotrophs (mutants that are unable to grow without lysine supplementation to the minimal growth medium) were screened. Four mutants ( m 1 to m 4 ) were isolated, which were all recessive compared to the wild-type (WT). To find out the number of genes affected by these mutations, haploid mutants were mated and the ability of the resultant diploid prog
Options
- AThere are three genes affected by the mutations.
- Bm 1 and m 3 are mutations on the same gene.
- Cm 2 and m 4 are likely to display the same phenotypic defect.
- Dm 1 and m 2 are mutations on different genes.
Correct answer
D. m 1 and m 2 are mutations on different genes.
Step-by-step solution
No solution available.