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Question-1
Each chromosome at the anaphase stage of a bone marrow cell in our body has
(A)
two chromatids
(B)
several chromatids
(C)
no chromatids
(D)
only one chromatid.
Question-2
Radio-tracer technique shows that DNA is in
(A)
multi-helix stage
(B)
single-helix stage
(C)
double-helix stage
(D)
none of these
Question-3
The polytene chromosomes were discovered for the first time in
(A)
Drosophila
(B)
Musca domestica
(C)
Chironomus
(D)
Musca nebula
Question-4
Out of 8 ascospore formed in
Neurospora
the arrangment is 2a: 4a: 2a showing
(A)
no crossing over
(B)
some meiosis
(C)
second generation division
(D)
first generation division.
Question-5
Diploid chromosome number in human is
(A)
46
(B)
44
(C)
48
(D)
42
Question-6
Experimental material in the study of DNA replication has been
(A)
Escherichia coli
(B)
Neurospora crassa
(C)
Pneumococcus
(D)
Drosophila melanogaster.
Question-7
Khorana first deciphered the triplet codons of
(A)
serine and isoleucine
(B)
cysteine and valine
(C)
tyrosine and tryptophan
(D)
phenylalanine and methinonine
Question-8
In split genes, the coding sequences are called
(A)
exons
(B)
cistrons
(C)
introns
(D)
operons
Question-9
When a certain character is inherited only through female parent, it probably represents
(A)
multiple plastid inheritance
(B)
cytoplasmic inheritance
(C)
incomplete dominance
(D)
mendelian nuclear inheritance.
Question-10
The process of transfer of genetic information from DNA to RNA/formation of RNA from DNA
(A)
transversion
(B)
transcription
(C)
translation
(D)
translocation
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Plus 2 Biology Science
CBSE
Practice in Related Chapters
Plant Reproduction
Animal Tissue
Kingdom Monera
Plant Kingdom
Biological Classification
General Biology
Respiratory System
Digestive System And Nutrition
Circulatory System and Immunity
Plant Morphology
Plant Anatomy
Cell Reproduction
Human Genetics & Genetic Disorders
Mendelian & Postmendelian Genetics
Genes & Chromosomes
Biomolecules
Enzymes
Cell Respiration
Cell Respiration
Kingdom Fungi
Aging And Death
Common Human Diseases
Evolution
Drug And Addiction
Reproduction And Embryonic Development
Endocrine System
Excretion And Osmoregulation
Nervous System & Sense Organs
Musculo-Skeletal System
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