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a) Family formations
Purpose of reproduction leads to the formation of groups of individuals, called a family, which is an instinct of individuals of different sexes of a species. However, grouping behaviour varies from one species to another. i) Some animals are solitary and lead more an independent life. A..
Mrs. Zelma's family moved from New Zealand to Australia. They carried ..
Mrs. Zelma's family moved from New Zealand to Australia. They carried 5 suitcases each weighing 80 lb. How much did their luggage weigh altogether? => 85 lb or 410 lb or 400 lb or 16 lb..
Mendelian Genetics
Mendel (1822-1884) was born in to the family of a poor peasant in Moravia, Austria. He received his school education with utmost difficulty due to poverty in the family. In 1843 he joined a church as a monk where in 1847 he became the abbot (head) of the monaster..
Modern Classification Summary
. The two-kingdom classification has certain demerits, particularly with reference to lower forms of life which show common features with both plants and animals. In 1858 Earnt Haeckel proposed the three-kingdom classification in which apart from Plantae and Animalia, a new kingdom Protis..
Instant Speciation by Hybridisation and Polyploidy
It is known that members belonging to closely related species do not interbreed and even if they do so they do not produce fertile young. However, very rarely, fertile offspring may result from the interbreeding of two closely related species. In such cases, the resulting offspring represents a ..
Question 10
. They approached Trusty, Singh's company in Kolkata, to help them out. It came up with the giant key and the 2-ft tall, 1-ft wide lock that weighed 80 kg. When the temple authorities commissioned Singh to make what is probably the world's largest lock, he did not have to think twice. He had travel..
Gregor Johann Mendel
Mendel (1822-1884) was born in to the family of a poor peasant in Moravia, Austria. He received his school education with utmost difficulty due to poverty in the family. In 1843 he joined a church as a monk where in 1847 he became the abbot (head) of the monastery at B..
Mendel (1822-1884) was born in to the family of a poor peasant in Moravia, Austria. He received his school education with utmost difficulty due to poverty in the family. In 1843 he joined a church as a monk where in 1847 he became the abbot (head) of the monastery at B..Introduction
Born in San Francisco, Frost spent most of his adult life in rural New England and his laconic language and emphasis on individualism in his poetry reflect this region. He attended Dartmouth and Harvard but never earned a degree, and as a young man with a growing family he a..
Born in San Francisco, Frost spent most of his adult life in rural New England and his laconic language and emphasis on individualism in his poetry reflect this region. He attended Dartmouth and Harvard but never earned a degree, and as a young man with a growing family he a..Artificial Speciation
New species can be created by domesticated animal husbandry for better and yield. For example, a new species of domestic sheep were created by hybridisation that no longer produced viable offspring with the parent species. Domestic cattle on the other hand, with several varieti..
New species can be created by domesticated animal husbandry for better and yield. For example, a new species of domestic sheep were created by hybridisation that no longer produced viable offspring with the parent species. Domestic cattle on the other hand, with several varieti..Plant Tissue Culture
Plant Tissue Culture - It refers to culture or growing the plant tissues. Plant tissue culture is developed as a separate branch of science - ever since the potentiality of each cell or tissue of plant to grow into a separate organism has been recognised. Tissue culture technique has opened up ..
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