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Genetics Most Important MCQs: Set#. 6

1001 - The mutation in FUT1 gene causes__________pheotype






Bombay

1002 - The mutation in mtDNa is _______higher than nuclear DNA






Tenfold

1003 - The mutation in Sickle cell anemia consists of a change in codon in mRNA from GAG to






GUG

1004 - The mutations in genes encoding telomerase or shelterin subunits can cause__________disease






Dyskeratosis congenita

1005 - The mutations in genes encoding telomerase or shelterin subunits can cause__________disease/diseases






All of these

1006 - The naturally competent bacterium/bacteria






All of these

1007 - The new genes can be arise from






Duplication

1008 - The nitrogen base I(inosinic acid) can form hydrogen bonds with






All of these

1009 - The nitrogenous bases in DNA are






Hydrophobic

1010 - The non dividing stage of cell division is called






G0

1011 - The non parental gametes are also known as_____________gametes






Both a and b

1012 - The nonhuman primates have _______copy/copies of SRGAP2






1

1013 - The nonsence codon/codons






All of these

1014 - The normal blood level of phenylalanine is about_______mg/100ml






1

1015 - The normal products of many mutated genes for cell cycle are enzymes






Kinases

1016 - The nucleolus disintegrates within the nucleus in






prophase

1017 - The nucleolus refoms and become visible within the nucleus in






Telophase

1018 - The nucleosome having 11 nm diameter is further packed into a thicker structure called






Both a and b

1019 - The nucleotide sequences that are retained in the mature mRNA and expressed are called






Exons

1020 - The nucleotide sequences that intervene between coding sequences for amino acids are called






Introns

1021 - The number of chromosome reduced to half in






Meiosis

1022 - The number of genes in mtDNA varies from






12-100

1023 - The number of introns in human albumin gene






14

1024 - The number of introns in human collagen gene






51

1025 - The number of introns in human dystrophin gene






79

1026 - The number of introns in human insulin gene






2

1027 - The number of introns in human phenylalanine hydroxylase gene






12

1028 - The number of linkage groups should correspond to the ___________number of chromosomes






Haploid

1029 - The number of nucleotides in mRNA in Eukaryotic and prokaryotic cells






100-10000

1030 - The number of nucleotides in rRNA in Eukaryotic and prokaryotic cells






120-4718

1031 - The number of nucleotides in tRNA in Eukaryotic and prokaryotic cells






75-90

1032 - The number of turns in DNA helix is called






Linking number

1033 - The oligomeric proteins have






Quarternary structure

1034 - The organism used for basic biological processes






Model organism

1035 - The OriC in bacteria consists of _________DNA base pairs






245

1036 - The OriC in bacteria consists of________ and ________repeating sequence of base pairs






9mers and 13 mers

1037 - The original parents constitute the _____________generation






P1

1038 - The pairing of homologous chromosomes during meiosis is called






Synapsis

1039 - The part of chromosome which is genetically active






Euchromatin

1040 - The part of chromosome which remain condesed during interphase is called






Heterochromatin

1041 - The part of chromosome which remains uncoiled during interphase is called






Euchromatin

1042 - The part of chromosome/chromosome which is genetically inactive






Both a and b

1043 - The paternal age effects (PAE) can increase the risk of _______________disorder/diorders






All of these

1044 - The paternal ratio of contribution of Down syndrome trisomic 21






5

1045 - The percentage of ______________remains low between three genes






Double crossover

1046 - The percentage of expression of a mutant genotype






Penetrance

1047 - The percentage of mRNA in Eukaryotic and prokaryotic cells






5

1048 - The percentage of rRNA in Eukaryotic and prokaryotic cells






80

1049 - the percentage of terad involved in an exchange between two genes is twice as great as the percentage of _______gametes produced






Recombinant

1050 - The percentage of tRNA in Eukaryotic and prokaryotic cells






15

1051 - The persons afflicted with phenylketonuria(PKU) are unable to convert the amino acid Phenylalanine to the amino acid_________






Tyrosine

1052 - The petite mutation in Sacharomyces cervisiae exhibit Mendelian inheritance






Segregational petites

1053 - The phase in which sister chromatids of each chromosome, held together only at their centromere regions






Anaphase

1054 - The phosphate group may be bonded to the_________________of the sugar






All of these

1055 - The physical appearance of a trait is called






Phenotype

1056 - The physical breaking and rejoining of segment of chromosomes during meiosis is






Crossing over

1057 - The physical dislocation of a gene may influence its expression is called






Position effect

1058 - The physical expression of a trait is






Phenotype

1059 - The plumage in domestic fowl, heterozygous hh will produce __________in female






Hen feathered

1060 - The plumage in domestic fowl, heterozygous hh will produce __________in female






Hen feathered

1061 - The plumage in domestic fowl, heterozygous hh will produce __________in male






Cock feathered

1062 - The plumage in domestic fowl, heterozygous Hh will produce __________in male






Hen feathered

1063 - The polyploid cells stay in the _______stage longer than normal






G1

1064 - The polytene chromosomes may contain upto____________replication copies that remain atached with one anothers






1000-5000

1065 - The possible gametes of AaBb






4

1066 - The potential chemical modification/modifications in amino acids of histones






All of these

1067 - The pre-mRNA is nearly _________ times the length of the mature spliced mRNA






3

1068 - The presence of more than one type of organellar genome within a cell or individual






Heteroplasmy

1069 - The presence of mRNA was postulated by






Francois Jacob

1070 - The probabilty of two or more events to occur is equal to the product of their individual probabilties






Product law

1071 - The process in which pre-mRNA and mature mRNA differs from the sequence encoded in the exons of the DNA from which the RNA was transcribed






RNA editing

1072 - The process of infection by only the viral nucleic acid is called






Tranfection

1073 - The process of X-ray diffraction analysis to study structure of DNA was performed in 1938 by






Astburry

1074 - The process of X-ray diffraction analysis to study structure of protein was performed by






Pauling

1075 - The processes of conjugation in bacteria was discovered by






Lederberg

1076 - The processing of mRNA before coding occurs in






Eukaryote

1077 - The proportion of conjugation remains about_________between F+ and F-






44841

1078 - The proportion of conjugation remains about_________between Hfr and F-






44838

1079 - The protein ________is respomsible for initiating of replication in bacteria by binding to a region of 9mers.






DnaA

1080 - The protein invelove in mitotic and meiotic spindles






Tubulin

1081 - The protein which bind to DNA in eukaryotic organisms






Histones

1082 - The proteins ____________ can kill neighboring bacteria that do not contain the same proteins






Colicins

1083 - The proteins which are involved in cell cycle are called






Cyclins

1084 - The proteins which are involved in movements of chromosomes towards their respective poles






Molecular motors

1085 - The R plasmids contain genes for






Antibiotics resistance

1086 - The random X chromosome inactivation was hypothesized by






Mary Lyon

1087 - The range of expression of the mutant genotype






Expressivity

1088 - The rate of synthesis of DNA by DNA polymersae is about ___________nucleotides per minutes in eukaryotes






2000

1089 - The rate of synthesis of DNA by DNA polymersae in Bacteria is___________to/than in eukaryotes






Faster

1090 - The rate of synthesis of DNA by DNA polymersae in Bacteria is__________times faster than in eukaryotes






25

1091 - The ratio of coat color in mouse in F2 due to gene interactuon






0.37712962963

1092 - The ratio of color of chicken in F2 due to gene interactuon






0.37917824074

1093 - The ratio of flour beetle color in F2 due to gene interactuon






6:3:3:4

1094 - The ratio of flower color of pea in F2 due to gene interactuon






0.37986111111

1095 - The ratio of Shepherd's purse seed capsule shape in F2 due to gene interactuon






0.62569444444

1096 - The ratio of squash color in F2 due to gene interactuon






0.50209490741

1097 - The ratio of squash fruit shape in F2 due to gene interactuon






0.37917824074

1098 - The ratio of tall and dwarf in law of segregation






3 to 1

1099 - The rearrange of genes order






Inversion

1100 - The recessive _________ alleles in homozygous condition can cause death of organism






Lethal

1101 - The recipient bacteria remain__________,when mated with Hfr






F-

1102 - The recombinant events occur_______along the length of tetrad






Randomly

1103 - The recombination in bacteria with the help of bacteriophage






Transduction

1104 - The region on chromosomes at which microtubules during cell division






Kinetochore

1105 - The relative locations of genes on the chromosomes is called chromosome _____________






Mapping

1106 - The replication of DNA is semiconservative and__________






Bidirectional

1107 - The replication of DNA occur in






S phase

1108 - The reversion of Hfr to F+ creates






F´

1109 - The rII mutant phages can infect and lyse






E.coli B

1110 - The RNA polymerase I (RNAP I) transcribes __________genes in eukaryotes






rRNA

1111 - The RNA polymerase II (RNAP II) transcribes __________genes in eukaryotes






mRNA

1112 - The RNA polymerase III (RNAP III) transcribes __________genes in eukaryotes






tRNA

1113 - The salivary gland cells of water strider Gerris may contain more than___________chromosomes






40000

1114 - The salivary gland cells of water strider Gerris may contain________copies of each chromosome, the 2n is 22 in this organism






Both b and c

1115 - The segment of DNA which move from place to place in the genome of certain organisms is called






Transposable element

1116 - The self-excission mechanism of introns removal was discovered by






Thomas Cech

1117 - The semiconservative theory of replication was presented by






Meselson and Stahl

1118 - The separation of sister chromatids during anaphase is called






Disjunction

1119 - The sequence of amino acids in the linear backbone of the poypeptide is characteristic of






Primary structure

1120 - The set of alleles for a given trait is called






Genotype

1121 - The short interspersed elements(SINEs) are less than 500 base pairs long and may be present____________times in the human genome






1500000

1122 - The shorter arm of chromosome shown above the centromere is known as






P arm

1123 - The shugoshin protein protects ________ protein at centromeric region






Cohesin

1124 - The sickle cell anemia in human is _____________trait






Recessive

1125 - The sickle cell anemia was studied by _________in 1949






James Neel

1126 - The sickle cells are






Both A and B

1127 - The sister chromatids share one ____________






Centromere

1128 - The site which is recognized by RNA polymerase during transcription is called






Promoters

1129 - The size of cell increases in_________phase






G2

1130 - The size of cp DNA is larger than_________DNA






Mitochondrial

1131 - The size(kb) of mtDNA in Arabidopsis thaliana is






367

1132 - The size(kb) of mtDNA in Drosophila melonogaster is






18.4

1133 - The size(kb) of mtDNA in Homo sapiens is






16.6

1134 - The size(kb) of mtDNA in Mus musculus is






16.2

1135 - The size(kb) of mtDNA in Pisum sativum is






110

1136 - The size(kb) of mtDNA in Sacharomyces cerevisiae is






75

1137 - The size(kb) of mtDNA in Xenopus laevis is






18.4

1138 - The slow growing mutant strain in Neurospora crasa






Poky

1139 - The small subunit of Rubisco is encoded by






Nuclear DNA

1140 - The smallest functional genetic unit which describe a compementaion group






Cistron

1141 - The snRNAs are rich in






Uridine

1142 - The snurps are complex of






snRNAs+protein

1143 - The Spindle fibers are made up of






Microtubules

1144 - The Spindle fibers attached to






Both a and b

1145 - The spindle fibers disappear in






Telophase

1146 - The splice donor contains __________at 3 prime end of snRNAs






AG

1147 - The splice donor contains __________at 5 prime end of snRNAs






GU

1148 - The splitting of centromeres occur in






Anaphase

1149 - The SRGAP2 gene responsible for development of brain is found in






Primates

1150 - The standard value for p(probability) to reject or fail to reject the null hypothesis is






0.05

1151 - The stem and parenchymal tissue of apical regions of flowering plants are often






Endopolyploidy

1152 - The strand which serve as template and DNA synthesis occurs continuously is called






Leading strand

1153 - The strand which serve as template and DNA synthesis occurs discontinuously is called






Lagging strand

1154 - The structure of DNA was presented by






Watson and Crick

1155 - The structure of spliceosome in mammals is






60S

1156 - The structure of spliceosome in Yeast is






40S

1157 - The study of structure, function and evolution of genes genomes is






Genomics

1158 - The studying and understanding gene function is called






Classical genetics

1159 - The sugars and phosphate backbones in DNA are






Hydrophilic

1160 - The supercoiling in replicating DNA can be relaxed by






DNA gyrase

1161 - The symbols R1R1 and R2R2 for red and white are used for____________dominance






Incomplete

1162 - The symptom/symptoms of duchenne muscular dystrophy (DMD)






All of these

1163 - The synrhesis of DNA from RNA






Reverse transcription

1164 - The synrhesis of RNA from DNA






Transcription

1165 - The synteny testing is done to know the presence or absence of ________






Gene

1166 - The synthesis of large molecules from small molecules is called






Anabolism

1167 - The synthesis of protein from mRNA is called






Both A and C

1168 - The synthesis of RNA from DNA is called






Transcription

1169 - The tail of mammalian's chromosome varies between






30-400

1170 - The tandemly repeated sequences consists of di, tri, tetra and pentanucleotides are called






Microsatellite

1171 - The TATAAT, is located 10 nucleotides upstream is also called






Pribnow box

1172 - The tay-sachs disease in human is _____________trait






Recessive

1173 - The term homunculus means






Miniature adult

1174 - The term isiagglutinogen can be used for






Antigen

1175 - The tertiary structure of protein is stabilized by






All of these

1176 - The theory of epigenesis was proposed by






Willium Harvey

1177 - The theory of natural selection was formulated by






Darwin

1178 - The theory of replication DNA in which one strand is new and other is old in both helices






Semi-conservative

1179 - The theory of replication in which both helices are mixtures or hybrids of parental and daughter DNA






Dispersive

1180 - The theory of replication in which both strand of both helices are either new or old






Cosevative

1181 - The three dimensional conformation of all_________molecules has been preserved throughout evolution






tRNA

1182 - The three dimensional model was presented by






Alexander Rich

1183 - The tool/tools for gene transfer in microbe






All of these

1184 - The topoisomerases were discovered by






Martin Gellert

1185 - The total time spent in each interval of one complete cell cycle of a human cell in culture






16

1186 - The tra genes in bacteria are involved in the formation of






Sex pilus

1187 - The trait which appear in F1 generation






Diminant

1188 - The trait which hide itself in F1 generation






Recessive

1189 - The trans-acting factors are proteins that influence gene __________by binding to cis-acting elements






Expression

1190 - The transesterification reactions occur during___________of introns removal






Self-excision

1191 - The transformation of DNA is__________process






Active

1192 - The translocation and inversion in chromosomes may cause_____________in genes






Position effect

1193 - The triplet code on mRNA is called






Codon

1194 - The triplet code on tRNA is called






Anticodon

1195 - The two chains in DNA strucure are antiparallel was proposed by






Watson

1196 - The two nonsister chromatids not involved in the exchange result in______________gametes






Both a and b

1197 - The type of cell division in number of chromosome reduce to half






Meiosis

1198 - The type of cell division in number of chromosome remain constant






Mitosis

1199 - The type of chromosomal aberration in which a segment of chromosome is turned around 180 degrees within a chromosome






Inversion

1200 - The uncontrolled cell division characterizing__________






Malignancy

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