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Q.88 The population data present in an island is as follows Genotype    Number 𝐴𝐴                 300 𝐴𝑎              […]

Q.87 In the Meselson and Stahl experiment, E. coli was grown in a medium containing 15NH4Cl. After 24 hours, the E. coli cells were transferred to a medium containing 14NH4Cl. […]

Q.86 A particular species is found to have 𝟐𝒏 = 𝟏𝟔 chromosomes. The number of linkage groups in this species will be ____ Linkage groups represent sets of genes inherited […]

Q.85 Which one of the following statements is NOT correct? (A) During metaphase, the 2 copies of chromosomal DNA are held together at the centromere (B) The short arm of […]

Q.84 The covalent modification performed by kinases which regulate proteins in signaling pathways is (A) glycosylation (B) methylation (C) ubiquitination (D) phosphorylation Kinases perform phosphorylation, the key covalent modification that […]

Q.83 Aromatase inhibitors are often prescribed for post-menopausal women to treat estrogen receptor positive breast cancer patients, because these class of drugs (A) reduce prostaglandin biosynthesis (B) reduce the level […]

Q.82 Malaria is caused by Plasmodium species, which is a parasite having a complex life cycle. The fusion between male and female gametocytes of Plasmodium happens inside (A) human liver […]

Q.81 A female “Spotted sand piper” courts males repeatedly. This behavior can be explained by the term (A) polyandry (B) polygyny (C) monogamy (D) sexual cannibalism Female spotted sandpipers court […]

Q.80 The metabolic pathway which is common to both fermentation and cellular respiration is (A) the TCA cycle (B) the electron transport chain (C) glycolysis (D) synthesis of acetyl CoA […]

Q.79 The enzyme amylase can break alpha glycosidic linkages between glucose monomers. Hence, amylase can digest which one of the following carbohydrates? (A) Cellulose (B) Starch (C) Chitin (D) Xylans […]