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Q.91 Imagine a population of diploid species in Hardy–Weinberg equilibrium.The population has two alleles for a gene which are ‘a’ and ‘A’. The number ofindividuals with ‘aa’ genotype in this […]

Q.90 The “foramen of Panizza” is found in which one of the following groups of animals?(A) Fishes(B) Crocodiles(C) Frogs(D) Dolphins The foramen of Panizza is a specialized anatomical structure found […]

Q.89 Desmosomes are(A) intermediate filament–based cell adhesion complexes.(B) protein synthesizing macromolecular complexes.(C) subcellular organelles.(D) DNA–protein complexes. Desmosomes are intermediate filament-based cell adhesion complexes that anchor adjacent cells together for mechanical […]

Q.88 Which one of the following is a “post–zygotic” isolating mechanism of speciation?(A) Behavioral isolation(B) Fertilization failure(C) Hybrid sterility(D) Seasonal isolation Correct Answer: (C) Hybrid sterility Hybrid sterility represents a […]

Q.87 The animals belonging to which one of the following phyla are characterized by“segmented body” ?(A) Annelida(B) Cnidaria(C) Echinodermata(D) Porifera Annelida is the correct answer (A). Animals in phylum Annelida […]

Q.86 During the development of a mammalian embryo, “yolk sac” is formed by whichone of the following?(A) Syncytiotrophoblast(B) Primitive endoderm (hypoblast)(C) Amniotic ectoderm(D) Embryonic epiblast Yolk Sac Formation in Mammalian […]

Q.85 Which one of the following is a “brood parasite” ?(A) Pigeon(B) Sparrow(C) Goose(D) Cuckoo Cuckoo is the brood parasite among the options. Brood parasitism involves a bird laying eggs […]

Q.84 A polymerase chain reaction (PCR) based diagnosis test was performed on abacterial sample targeting a specific gene. There are 3 copies of this gene inthe bacterial genome. Prior to […]

Q.83 The doubling time of Escherichia coli is 30 minutes in a culture mediumcontaining glucose and yeast extract. Phage T7 has a life cycle of 20 minutesand a burst size […]

Q.82 Which option(s) correctly match(es) the Antibiotic with their corresponding Target? Antibiotic Target P. Penicillin i. Ribosome Q. Kanamycin ii. RNA polymerase R. Rifampicin iii. DNA gyrase S. Nalidixic acid […]