1 |
Blue cone monochromacy is also called |
Red - green colour blindness
Red - blue colour blindness
Green - blue colour blindness
Yellow - blue colour blindness
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2 |
O blood has neither A or B antigen but it does have |
Anti - A antibodies
Anti - B antibodies
Anti - O antibodies
Both a & b
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3 |
ABO system has four different phenotypes which are distinct from each other on the basis of specific antigens on the surface of |
Mitochondria
Gogli bodies
RBC
Centrioles
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4 |
ABO blood group system was discovered by |
Karn Ladsteiner
Bernstein
Correns
T.H.morgans
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5 |
A woman can be bald only when she is |
Homozygous domunant
Heterozygous
Homozygous recessive
Maleness
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6 |
A monochromat can perceive |
Three colours
Yellow colours
Only ane colour
Two colours
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7 |
A dichromate can perceive two primary colours but is unable to perceive the one whose opsins are missing due to |
Metamorphosis
Transmutation
Alteration
Mutation
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8 |
A clear picture of the genetic basis of sex determination emerged after the discovery of |
Autosomes
X chromosomes
Sex chromosomes
Y chromosomes
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9 |
80% haemophiliacs suffer from haemophilia A due to abnormality of factor |
VIII
IX
X
XI
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10 |
Three sets of microtubules (fibres) originate from each pair of |
Glyoxisomes
Iysosomes
Peroxisomes
Centrioless
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11 |
The series of changes which involve period of growths replication of DNA followed ny cell division may be named as |
DNA cycle
Nuclear cycle
Cell cycle
Chemical cycle
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12 |
The pairing of homologous chromosomes is completed in |
Leptotene
Zygotene
Pachytene
Diplotene
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13 |
The kinetochore fibres of spindle attach to the kinetochore region of chromosome and align them at the equator of the spindle forming |
Equatorial plate
Metaphase plate
Central plate
Both a & b
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14 |
Shape of the plant cell does not change greatly compared with an animal cell because it is surrounded by a rigid |
Cell membrane
Capsule
Sheath
Cell wall
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15 |
Nuclear membrane disorganizes at the beginning of |
Prophase 1
Metaphase 1
Anaphase 1
Telophase 1
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16 |
Mitosis may be divided into two phases |
Karyikinesis & cytokinesis
Karyikinesis & diakinesis
Diakinesis & cytokinesis
Exokinesis & endokinesis
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17 |
Interphase can further be divided into |
G<sub>1</sub>-phase,S-phase and G<sub>2</sub>-phase
G<sub>1</sub>-phase,G<sub>2</sub>-phase and G<sub>3</sub>-phase
S<sub>1</sub>-phase,S<sub>2</sub>-phase and S<sub>3</sub>-phase
S<sub>1</sub>-phase,G-phase and S<sub>2</sub>-phase
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