NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Botany MCQs (Practice_Test 67 of 104)
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- Irradiation of a mixture of NH3, CH4, H2 and H2O vapor resulted in the formation of adenine. Such experimental evidence supports Oparin՚s hypothesis on the origin of life because adenine is found in
- ATP
- RNA
- DNA
- ATP, RNA and DNA
- In a population. The Hardy-Weinberg equilibrium would NOT prevail in the
- Absence of selection
- Presence of random mating
- Absence of immigration or emigration
- Presence of mutation
- Adaptive radiation means
- Migration of daughter populations to newer localities without losing capacity for exchange of genes with parental populations
- Formation of sympatric populations that cannot exchange genes
- The ultimate stage in isolation mechanism.
- The manifestation of geographical isolation that ultimately leads to reproductive isolation
- Copper-containing blue protein found in the chloroplast is the
- Plastocyanin
- Plastoquinone
- Cytochrome f
- Ferredoxin
- Dermatomes are
- Formed during bacterial conjugation
- Small vesicles found in pancreatic cells
- Synthesized during cell wall formation in plant
- Specialized regions of cell membrane for adhesion to other cells in animal tissues
- The linker region joining the two nucleosome Particles is about 40 to 60 base pairs long. It contains
- His tone H2A and H2B
- His tone H1
- Two molecules each of his tone H1 and H3
- All the five his tones
- Feulgen staining for DNA is based on the reactions of Schiff՚s reagent with
- Free aldehyde groups
- Purines at N − 7 positions
- Deoxyribose at C − 2 positions
- Pyrimidines at N − 1 positions
- Extrusion or passage of chromatin from one cell into the cytoplasm of the adjoining cell is due to
- Cytomixis
- Cytokinesis
- Inversions
- Translocation
- Is chromosome refers to the
- Chromosome which has been isolated from the rest of the complement
- Chromosome which has reached the equatorial plane earlier than the other chromosomes.
- Tran located chromosome having identical arms
- Lagging chromosome which has not moved to either of the poles
- Match List I (Chromosome aberrations) with List II (Consequences) and select the correct a answer using the codes given below the lists:
Table Supporting: NET, IAS, State-SET (KSET, WBSET, MPSET, Etc.) , GATE, CUET, Olympiads Etc. : Botany MCQs (Practice_Test 67 of 104) List-I List-II - Intercalary deficiency
- Duplication
- Para centric inversion
- Translocation
- Chromosome ring formation at metaphase
- Bridge and fragment formation
- Change in gene order
- Two breaks followed by reunion and deletion
- A
- B
- C
- D
- 4
- 3
- 2
- 1
- 4
- 3
- 1
- 2
- 3
- 4
- 1
- 2
- 3
- 4
- 2
- 1
- Statistical determination of concordance between expectations and observations is done by
- t-test
- x2-test
- F-value
- r-value
- RNA polymerase II which synthesizes mRNA in eukaryotes is generally
- Resistant to aipha-amanitin
- Sensitive to aipha-amanitin
- Resistant to actinomycin-D
- Sensitive to rifamycin
- Which of the following pairs is⟋arc correctly matched?
- Match Item 1: E-coil
- Match Item 2: Circular DNA
- Match Item 1: Tobacco Single
- Match Item 2: Stranded RNA mosaic virus
- Match Item 1: Reo virus
- Match Item 2: Double-stranded RNA
- Select the correct answer using the codes given below:
- Codes:
- 1 alone
- 1,2 and 3
- 1 and 3
- 2 and 3
- In specific population of a species, individuals showing 2n + 1 or 2n − 1 set of chromosomes are called respectably
- Nullisomics and monosomics
- Monosomics and trisomics
- Trisomics and monosomics
- Nullisomics and trisomics
- The modified F2 ratios 15 1,9 7,13 3 and 9: 3: 4 indicate
- Two pairs of characters controlled by two pairs of genes
- Three pairs of characters controlled by three genes
- A single charter controlled by. Two genes
- A pair of characters controlled by a single gene