कृषि, पशु र वन विज्ञान B.Sc. Ag र B.V.Sc. & A.H. प्रवेश तयारी
कृषि, पशु र वन विज्ञान – B.Sc. Ag र B.V.Sc. & A.H. प्रवेश
B.Sc. Ag & B.V.Sc. Entrance · Agriculture, Veterinary & Forestry Entrance
२,४९३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
कृषि, पशु र वन विज्ञान प्रवेश: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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Which of the following human disorders is inherited as an autosomal dominant trait?
सही उत्तर: घ) Huntington's disease
Huntington's disease is autosomal dominant; haemophilia is X-linked recessive and the other two are autosomal recessive.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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When a single gene influences several different phenotypic traits, the phenomenon is called:
सही उत्तर: ग) Pleiotropy
In pleiotropy one gene has multiple effects, e.g. the PKU gene affects mental development and pigmentation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A dihybrid test cross (AaBb x aabb) with independent assortment gives the phenotypic ratio:
सही उत्तर: क) 1 : 1 : 1 : 1
AaBb forms four gametes in equal proportion, and aabb contributes only ab, so four phenotypes appear equally.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Mendel's work was rediscovered in 1900 independently by:
सही उत्तर: क) de Vries, Correns and Tschermak
Hugo de Vries, Carl Correns and Erich von Tschermak independently rediscovered Mendel's laws in 1900.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A mutation in which a purine is replaced by another purine (for example A by G) is called a:
सही उत्तर: ख) Transition
Transition is the substitution of a purine for a purine or a pyrimidine for a pyrimidine; transversion swaps a purine with a pyrimidine.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The operon model of gene regulation in bacteria was proposed by:
सही उत्तर: ख) Jacob and Monod
Francois Jacob and Jacques Monod described the lac operon in 1961.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The anticodon, which pairs with a codon on mRNA, is located on:
सही उत्तर: क) tRNA
Each tRNA carries an anticodon loop that base-pairs with the complementary mRNA codon.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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During DNA replication, the short RNA primer needed to start a new strand is synthesised by:
सही उत्तर: घ) Primase
Primase (an RNA polymerase) lays down a short RNA primer to which DNA polymerase adds nucleotides.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In B-DNA, approximately how many base pairs make one complete turn of the helix?
सही उत्तर: ग) 10
One turn of B-DNA (pitch 3.4 nm) contains about 10 base pairs, each 0.34 nm apart.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The double helix model of DNA was proposed in 1953 by:
सही उत्तर: ख) James Watson and Francis Crick
Watson and Crick proposed the double helix in 1953 using X-ray diffraction data of Franklin and Wilkins.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।