Tag: dbt jrf 2018

155. Assume that a marker M1 is present 5 cM away on one side of a gene “X” (a desirable allele of the gene), while marker M2 is present 10 […]

154. In an ordered tetrad analysis, if the two genes are not linked, the ………… will be almost equal. 1. Parental ditype and non-parental ditype 2. Parental ditype and tetratype […]

152. Linkage disequilibrium (LD) decay is: 1. Much rapid in out-crossing than in selfing species 2. Much rapid in selfing than in out-crossing species 3. Equal in selfing and out-crossing […]

151. A marker present outside the targeted QTL used to check the crossing over is called: 1. Peak marker 2. Background marker 3. Recombinant marker 4. Foreground marker Question A […]

150. Color blindness in human beings is an X-linked trait. A color-blind man has a 45, X daughter who is also color-blind. The nondisjunction that leads to the 45, X […]

149. In a given population, 1 out of 400 individuals has cancer caused by a recessive allele ‘p’. Assuming the population is in Hardy-Weinberg equilibrium, what is the expected proportion […]

148. A 30 Kb candidate gene linked to prostate cancer from a patient was digested with XhoI. Following Southern hybridization of the digested products with the full-length gene probe, three […]

146. Parents who appear normal have a child with sickle cell anemia, which is an autosomal recessive trait. The woman becomes pregnant again and is told that she is carrying […]

145. Of the two databases A and B, the database A is larger in size than database B. In a BLAST search, a sequence has a highly significant match with […]

144. Which one of the following tools can reliably establish an evolutionary link between two proteins and align them even if they share very low degree of sequence similarity? 1. […]