Animals belonging to phylum Echinodermata are closer to chordates than other invertebrate phyla. Which ONE of the following reasons can account for this relatedness?
A zoologist recovered some tissue from preserved skin of a woolly mammoth. Further genetic analysis requires DNA isolation and increasing its amount. Which ONE of the following techniques would be most useful for increasing the amount of DNA?
In a chemical reaction where the substrate and product are in equilibrium in solution, what will occur if an enzyme is added?
Tay-Sachs disease is a human genetic disorder that is associated with defects in which ONE of the following cellular organelles?
Increase in the existent population of grey peppered moth, Biston betularia, during industrial revolution in Britain is an example of which ONE of the following evolutionary processes?
Which ONE of the following is NOT a characteristic of a cancer cell?
Cardiac and cerebral tissues are derived from the following germ layers respectively
An animal’s ability to escape from a predator by using the explored knowledge of home area is an example of
Bowman’s capsules are present in which ONE of the following organs/ tissues?
Which ONE of the following is the primary function of lung surfactants?
Match the disorders/diseases listed in Column I to their respective causative agents listed in Column II.
Glucose monomers are joined together by glycosidic linkages to form a cellulose polymer. During this process, changes in the free energy, total energy, and entropy respectively are represented correctly by which ONE of the following options?
In Drosophila melanogaster, a mutation in Ultrabithorax which defines the third segment of the thorax or T3 leads to development of four winged flies, as the halteres develop into a second pair of wings. Which ONE of the following phenotypes in fly will result from overexpression of Ultrabithorax in the second thoracic segment?
Which ONE of the following is TRUE in case of respiratory acidosis?
Match the proteins / molecules listed in column I with the cellular location mentioned in the column II
In an experiment, nucleus from a Drosophila oocyte was transplanted into the anterior part of another oocyte, at a region opposite to the existing nucleus. Which ONE of the following phenotypes will the developing egg show?
Match the organisms listed in Column I with the features listed in Column II
Which ONE of the following statements is NOT part of the classical Darwinian theory of evolution by natural selection?
A population of rabbits was determined to have a birth rate of 200 and mortality rate of 50 per year. If the initial population size is 4000 individuals, after 2 years of non-interfered breeding the final population size will be _______________.
In a population which is in Hardy-Weinberg equilibrium, the frequency of occurrence of a disorder caused by recessive allele (q) is 1 in 1100. The frequency of heterozygotes in the population will be ______________. (Give the answer to three decimal places).