Blog

Q.65 The frequencies for autosomal alleles A and a are p = 0.5 and q = 0.5,respectively, where A is dominant over a. Under the assumption of randommating, the mating […]

Q.64 A cytoplasmic male–sterile female plant with the restorer (nuclear) genotype rris crossed to a male–fertile male plant with the genotype RR. Both RR and Rr canrestore the fertility, whereas […]

Q.63 In a diploid angiosperm species, flower colour is regulated by the R gene.RR and Rr genotypes produce red flowers, whereas the rr genotype produceswhite flowers. If two individual plants […]

Q.62 Blue light can directly induce opening of stomata. Blue light also triggersphotosynthesis in the guard cells, which indirectly induces stomatal opening.Which one or more of the following experimental approaches […]

Q.61 A drought tolerant rice genotype was found to be associated with a missensemutation in the gene A. Which one or more of the following experiments is/areappropriate to validate whether […]

Q60. Which one of the options given correctly matches the alkaloids in Group I with their source plants in Group II? Group I Group II P. Cocaine Q. Caffeine R. […]

Q.59 Consider the following four experimental observations (i, ii, iii, iv) on the effect ofthe FT gene on flowering transition in the shoot apical meristem (SAM) ofArabidopsis thaliana.i) The FT […]

Q.58 Central vascular cylinder or stele consists of the primary vascular system (xylemand phloem) and the associate fundamental tissue. Match the schematics of stelein Group I (xylem shown in green, […]

Q57 Match the following rice diseases in Group I with their causal agents in Group II Group I Group II (P) Blast smut (1) Sarocladium oryzae (Q) Sheath blight (2) […]

Q56 Periderm is a protective tissue found in stems and roots of gymnosperm and woody dicotyledons. It contributes to the increased thickness by secondary growth. Match the periderm components given […]