191.
The term 'nucleosome' was given by oudet oline and olins called these particle as 'nu' particles which histone is absent in nucleosome A
H1
B
H2
C
H3a
D
H4
Answer :
H3a
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192.
Cell division in blue green algae similar to that in A
Bacteria
B
Brown algae
C
Green algae
D
Higher plants
Answer :
Bacteria
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193.
Select the correct option :
I
II
a. Synapsis aligns homologous chromosomes
1. Anaphase-II
b. Synthesis of RNA and protein
2. Zygotene
c. Action of enzyme recombinase
3. $${G_2}$$-phase
d. Centromeres do not separate but chromatids move towards opposite poles
4. Anaphase-I
5. Pachytene
A
a-2, b-3, c-5, d-4
B
a-1, b-2, c-5, d-4
C
a-2, b-3, c-4, d-5
D
a-2, b-1, c-3, d-4
Answer :
a-2, b-3, c-5, d-4
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194.
A bacterium divides every 35 minutes. If a culture containing $${10^5}$$ cells per $$ml$$ is grown for 175 minutes, what will be the cell concentration per $$ml$$ after 175 minutes? A
$$5 \times {10^5}$$ cells
B
$$35 \times {10^5}$$ cells
C
$$32 \times {10^5}$$ cells
D
$$175 \times {10^5}$$ cells
Answer :
$$32 \times {10^5}$$ cells
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195.
In tetrad, the number of non cross over chromatids is normally A
Four
B
Two
C
One
D
None of the above
Answer :
Two
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196.
Single membrance bound is A
Lysosome
B
Plastid
C
Nucleus
D
Mitochondria
Answer :
Lysosome
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197.
Kernplasm theory proposed by A
Harting
B
O. Hertwig
C
Huxley
D
Steward
Answer :
O. Hertwig
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198.
In which stage of centromere lie at equator and arms are directed towards poles A
Metaphase of mitosis
B
Metaphase -I
C
MetaphaseIi
D
1 and 3 both
Answer :
1 and 3 both
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199.
Structure of nuclear membrance helps in A
Organisation of the spindle
B
synapsis of homologous chromosome
C
Nucleo-cytoplasmic exchange of material
D
Anaphasic separation of daughter chromosome
Answer :
Nucleo-cytoplasmic exchange of material
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200.
Meiosis I is reductional division. Meiosis II is equational division due to A
pairing of homologous chromosomes
B
crossing over
C
separation of chromatids
D
disjunction of homologous chromosomes
Answer :
separation of chromatids
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