By B.L. Chaudhary
The subject material is up to date and offers an perception of the topic intimately. After dealing with the manuscript, the readers could be able with an entire capability to get good fortune within the lifestyles sciences part. every one bankruptcy is supplemented with perform try out papers. 8 chapters containing 10 version try out papers is integrated to provide education to the scholars of this steam. version try papers comprise questions about arithmetic, computing device technological know-how, Geography, Physics, Chemistry and existence Sciences which shape the curriculum of Part-A of Paper-I. bankruptcy nine is particularly designed to provide reminiscence dependent lifestyles technological know-how query papers of previous couple of years. solution keys for perform attempt papers, version attempt papers and former 12 months internet try out papers also are supplied. this can be the 1st try out in India to supply all crucial elements in one identify to get convinced good fortune for internet exam carried out by means of CSIR-UGC in India.
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15. Cell doubles in size and then stops growing in G1 phase. G1 is longest, most variable phase in which maximum growth occurs. Circumstances which induce a cell to divide arise in G1 under the influence of some cytoplasmic clock. Decision for cell division also occurs here. 16. Size of nucleus increases in interphase; size of nucleolus increases in first four substages of Prophase-I of meiosis. 17. Aristolochia (duck weed) has all types of tetrads. 18. Protein (histone) for DNA synthesis is formed in S-phase while tubulin protein required for spindle is synthesized in G2 .
C) absence of an X chromosome. (d) absence of a Y chromosome. 56. A particular allele can have different effects if it was inherited from a male rather than a female. This phenomenon is known as (a) extranuclear inheritance. (b) aneuploidy. (c) sex-linkage. (d) genome imprinting. 43 Practice Test Paper–Cell Biology 57. Human mitochondria (a) are inherited as an X-linked trait. (b) are all inherited from the father. (c) have linear DNA. (d) are all inherited from the mother. 58. Both chloroplasts and mitochondria (a) are found within the nucleus.
C) have linear DNA. (d) are all inherited from the mother. 58. Both chloroplasts and mitochondria (a) are found within the nucleus. (b) have linear DNA. (c) carry extranuclear genes. (d) are inherited from both parents. 59. Damaged DNA is excised by (a) restriction enzymes. (c) primase. (b) helicase. (d) DNA polymerase. 60. Unlike prokaryotic DNA replication, eukaryotic DNA replication (a) is completed by DNA polymerase. (b) cannot be completed by DNA polymerase. (c) is semiconservative. (d) has a multiple origin.
CSIR-net Life Science by B.L. Chaudhary