Home Genetics Genetics Most Important MCQs: Set#. 6

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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