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DNA replication is semi-conservative in nature. This was experimentally proved in eukaryotes by:
Monascus purpureus is the yeast used commercially in the production of:
Which of the following is the initiation codon:
Match List-I with List-II: List-I A. Alfred Hershey and Martha Chase B. Euchromatin C. Frederick Griffith D. Heterochromatin List-II I. Streptococcus pneumoniae II. Densely packed and dark-stained III. Loosely packed and light-stained IV. DNA as genetic material confirmation
Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution.
Identify the correct set of statements: (a) The leaflets are modified into pointed hard thorns in Citrus and Bougainvillea. (b) Axillary buds form slender and spirally coiled tendrils in Cucumber and Pumpkin. (c) Stem is flattened and fleshy in Opuntia and modified to perform the function of leaves. (d) Rhizophora shows vertically upward growing roots that help to get oxygen for respiration. (e) Subaerially growing stems in grasses and strawberry help in vegetative propagation.
Darwin's finches are an excellent example of:
Consider the statements given below regarding contraception and answer as directed thereafter: (i) Medical Termination of Pregnancy (MTP) during first trimester is generally safe. (ii) Generally, chances of conception are nil until mother breast-feeds the infants upto two years. (iii) Intrauterine devices like copper-T are effective contraceptives. (iv) Contraception pills may be taken up to one week after coitus to prevent conception. Which two of the above statements are correct?
Assisted reproductive technology, IVF involves transfer of:
Match List-I with List-II: List-I A. Gene pool B. Genetic drift C. Genetic flow D. Genetic equilibrium (Gene frequency) List-II I. Stable within a generation II. Change in gene frequency by chance III. Transfer of genes into or out of population IV. Total number of genes and their alleles
Mannitol is a sugar alcohol. It is stored food in:
Match the following columns and select the correct option. Column-I (a) Pituitary gland (b) Thyroid gland (c) Adrenal gland (d) Pancreas Column-II (i) Grave's disease (ii) Diabetes mellitus (iii) Diabetes insipidus (iv) Addison's disease
In a random mating population in equilibrium, which of the following brings about a change in gene frequency in a non-directional manner?
Which of the following approaches does not give the defined action of contraceptive?
Match the following organisms with the products they produce: Column I (a) Aspergillus niger (b) Acetobacter aceti (c) Clostridium butyricum (d) Lactobacillus Column II (i) Ethanol (ii) Citric acid (iii) Lactic acid (iv) Acetic acid (v) Butyric acid
Identify the wrong statement with reference to immunity.
Match List-I with List-II: List-I A. Saccharomyces cerevisiae B. Aspergillus niger C. Trichoderma polysporum D. Clostridium butylicum List-II I. Citric acid II. Butyric acid III. Ethanol IV. Cyclosporin-A
Experimental verification of the chromosomal theory of inheritance was done by:
Which one of the following options gives one correct example of convergent evolution and divergent evolution respectively?
Recombination between homologous chromosomes is completed by the end of: