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Biotechnology
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Plant Genetics
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Question
During meiosis crossing over takes place at
Options
A. zygotene stage
B. diplotene stage
C. diakinesis stage
D. pachytene stage
Correct Answer
pachytene stage
Plant Genetics problems
Search Results
1. What is the approximate size (in kb) of the melon mitochondrial genome?
Options
A. 600 kilobase
B. 1200 kilobase
C. 2400 kilobase
D. 3000 kilobase
Show Answer
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Discuss
Correct Answer: 2400 kilobase
2. An organism that relies exclusively on pre-synthesized food molecules is
Options
A. autotrophic
B. photosynthetic
C. prokaryotic
D. heterotrophic
Show Answer
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Discuss
Correct Answer: heterotrophic
3. Plants absorb nitrates from soil and convert them into
Options
A. urea
B. ammonia
C. nitrogen
D. none of these
Show Answer
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Discuss
Correct Answer: ammonia
4. A group of about 300 chlorophyll molecule acting together to trap photons and transfer energy to the pigment molecule at the reaction center may be called as
Options
A. harvesting unit
B. reaction center
C. photosynthetic unit
D. chloromass
Show Answer
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Discuss
Correct Answer: photosynthetic unit
5. What type of long chain alcohol is esterified to plant chlorophyll molecules?
Options
A. Dolichol
B. Farnesol
C. Phytol
D. None of these
Show Answer
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Correct Answer: Phytol
6. Which of the following transposable elements are not found in plants?
Options
A. Ac
B. Tam3
C. L1
D. All are found
Show Answer
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Discuss
Correct Answer: L1
7. When do kinetochore microtubules pull chromosomes towards opposite spindle poles?
Options
A. In anaphase A
B. In anaphase B
C. In metaphase
D. In telophase
Show Answer
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Correct Answer: In anaphase A
8. In the meiotic cell divison in daughter cells are produced by two successive division in which
Options
A. first division is equational, second is reductional
B. first division is reductional and second is equational
C. both divisions are reductional
D. both divisions are equational
Show Answer
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Correct Answer: first division is equational, second is reductional
9. The homologous chromosomes follow the process of synopsis in the
Options
A. leptotene
B. zygotene
C. pachytene
D. diplotene
Show Answer
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Correct Answer: zygotene
10. In case of incomplete dominance, the phenotypic ratio of a monohybrid cross will be
Options
A. 1:2:1
B. 3:1:1
C. 1:3:1
D. 1:1:2
Show Answer
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Discuss
Correct Answer: 1:2:1
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