Term gene was proposed by

Hint: The term gene, genotype and phenotype was proposed by Plant Danish pharmacist, geneticist, plant physiologist (Botanist).He is well known for his 1903 experiment of pure line in genetics. He also worked at Royal Veterinary and Agricultural College in Copenhagen, Denmark, in 1892 as a lecturer of plant physiology. Complete answer: > Gene: Gene contains the necessary information that is required for the expression of a particular trait in an organism. One gene one enzyme hypothesis was given by Beadle and Tatum in Neurospora. They said that each gene functions to produce a new enzyme. After this Jacob and Baltimore proposed one mRNA-one polypeptide hypothesis. Term gene was given by Johannsen. > Genotype : Genetic complement of an organism of an organised with respect concern at the characters is called genotype. Term genotype was given by Johannsen. > Phenotype : Phenotype is observable morphological appearance. The phenotypes of an individual are determined by different combinations of alleles e.g., tallness and awareness. Term Phenotype was given by Johannsen. Wilhelm Johannsen born on 3 February 1857 was a Danish pill pusher, botanist, plant life scientist, and biologist, he is best known for coining the terms sequence, composition and genotype, and for his 1903 "pure line" experiments in biological science. Hence the correct option is (A) Johannsen. Note: Concept of genes was proposed by Mendel but terms gene was not proposed by him at that time he called them fac...

1). \( \Large A = \begin \) C). -16 D). 12 -- View Answer 2). Aqueous solution of which of the following is a good conductor of electricity? A). Ammonium acetate B). Glucose C). Ammonia D). Acetic acid -- View Answer 3). When the polarising angle for a dense ?int glass is 60�30', then its refractive index is A). 1.333 B). 1.541 C). 1.627 D). 1.768 -- View Answer 4). A bought a horse of Rs. 10,000 and sold it to B at 10% profit and B sold it to C at 10% loss. The amount paid by C is A). Rs. 10,000 B). Rs. 9,900 C). Rs. 9,999 D). Rs. 11,000 -- View Answer 5). One byte consists of A). 2 bits B). 4 bits C). 6 bits D). 8 bits -- View Answer 6). Where do we have Rapid Transit System in Tamil Nadu? A). Salem B). Trichy C). Chennai D). Thanjavur -- View Answer 7). Endothecium and endothelium are structures associated with A). Anther and lntegument B). Anther and Nucellus C). Integument and Amber D). Anther and Ovary wall -- View Answer 8). Which one of the following commercial crops is cultivated in large area in Tamil Nadu? A). Groundnut B). Gingili C). Sugarcane D). Cotton -- View Answer 9). Match List I wit List II correctly and select your answer using the codes given below: List I List II a) Aquaculture 1. Aquaculture b) Floriculture 2. Floriculture c) Sericulture 3. Sericulture d) Viticulture 4) Viticulture A). 1 2 3 4 B). 3 2 1 4 C). 4 1 3 2 D). 4 3 1 2 -- View Answer 10). ......... state of Indian Union has its own constitution A). Punjab B). Arunchal Pradesh C). Sikkim ...

Hint: This biologist related the work of Mendel to the idea of the evolution of Darwin and coined the term genetics for a replacement field in biology. He broadened the sector of genetics with experimental methodologies by studying variation and advocating Mendelian Genetics. Complete answer: Option A is incorrect. Johannsen was born in Copenhagen. The term “gene” was proposed from the Greek word “genos” which means birth. He coined the term in contrast to pan genes from Darwin’s theory of Pangenesis. He also introduced the terms “genotype” and “phenotype”. Option B is incorrect. Morgan was an American geneticist who was awarded the Nobel Prize in 1933 for his work. Morgan found fruit fly Drosophila melanogaster to be better material for experiments on genetics as it was easy to rear and multiply throughout the year. He observed the presence of genes over the chromosomes. Morgan established the principle of linkage and crossover. Option C is incorrect. Gregor J. Mendel was an Austrian scientist and prelate from Augustine who, while living during a monastery, experimented with Garden pea hybrids and is considered the “father of recent genetics”. In 1856, the Mendel began his experiments using the common edible pea to research seven which appeared to be inherited regardless of others traits such as the shape of the seed, the color of the flower, the tint of the seed coat, the shape of the pod, the unripe color, the position of the flower and the height of the plant. Option D...

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• DOI: • Corpus ID: 4521103 The Evolving Definition of the Term “Gene” @article • P. Portin , A. Wilkins • Published 24 March 2017 • Economics • Genetics This paper presents a history of the changing meanings of the term “gene,” over more than a century, and a discussion of why this word, so crucial to genetics, needs redefinition today. In this account, the first two phases of 20th century genetics are designated the “classical” and the “neoclassical” periods, and the current molecular-genetic era the “modern period.” While the first two stages generated increasing clarity about the nature of the gene, the present period features complexity and… Expand Ho demands that science return to a rival tradition “that resolutely resists fragmentation in favour of integration and process” because: “once the authors begin to see biology again in the light of nature’s unity, mind and body will become reunited through processes embracing every level from the sociocultural to the molecular. Expand This essay develops a definition of the gene that once again starts from the functional aspect, and introduces the new term “genon”, which can clearly separate product and regulative information while keeping the fundamental relation between coding and function without the need to introduce a conceptual hybrid. Expand The proposal of a genetic functor, or genitor, is a sweeping extension of the classical genotype/phenotype paradigm, yet it appears to be faithful to the findings of contemporar...

The origins of genetics are to be found in Gregor Mendel's memoir on plant hybridization (1865). However, the word ‘genetics’ was only coined in 1906, to designate the new science of heredity. Founded upon the Mendelian method for analyzing the products of crosses, this science is distinguished by its explicit purpose of being a general ‘science of heredity’, and by the introduction of totally new biological concepts (in particular those of gene, genotype, and phenotype). In the 1910s, Mendelian genetics fused with the chromosomal theory of inheritance, giving rise to what is still called ‘classical genetics’. Within this framework, the gene is simultaneously a unit of function and transmission, a unit of recombination, and of mutation. Until the early 1950s, these concepts of the gene coincided. But when DNA was found to be the material basis of inheritance, this congruence dissolved. Then began the venture of molecular biology, which has never stopped revealing the complexity of the way in which hereditary material functions. La génétique puise ses origines dans le mémoire de Mendel sur l’hybridation des plantes (1865). Le mot « génétique » ne fut cependant introduit qu’en 1906 pour désigner la nouvelle science de l’hérédité. Fondée sur la méthode mendélienne d’analyse des produits de croisements, cette science se distingue par son but explicite — être une science générale de l’hérédité —, et par l’introduction de concepts biologiques totalement nouveaux (notamment ceux ...