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Kathleen Blackburn
Kathleen Bever Blackburn, (1892–1968) was a British botanist best remembered for the 1923 discovery that plant cells have sex chromosomes. Her principal contributions were in plant cytology and genetics. She was also a pioneer of pollen analysis. She taught botany at Armstrong College, Durham University (later renamed King's College, now Newcastle University) from 1918 to 1957. Early life Kathleen Bever Blackburn was born in 1892. Her middle name is sometimes incorrectly given as "Beyer". Her father, E. P. Blackburn, was a prominent minister in the Methodist Church, ending his career at Jesmond after a number of ministries around the United Kingdom. Kathleen Blackburn and her sister Dorothy were active members of the congregation. Their father was a noted naturalist and amateur conchologist. She studied at Bedford College, University of London, from which she graduated with a Bachelor of Science (BSc) degree in 1912 and a Master of Science (MSc) degree in 1914. Career From ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ithaca, New York
Ithaca () is a city in and the county seat of Tompkins County, New York, United States. Situated on the southern shore of Cayuga Lake in the Finger Lakes region of New York (state), New York, Ithaca is the largest community in the Ithaca metropolitan statistical area. It is named after the Greek island of Ithaca (island), Ithaca. As of 2020, the city's population was 32,108. A college town, Ithaca is home to Cornell University, an Ivy League university, and Ithaca College. Nearby is Tompkins Cortland Community College (TC3), located in Dryden, New York, Dryden. History 17th century Native Americans lived in this area for thousands of years. When reached by Europeans, this area was controlled by the Cayuga people, Cayuga tribe of Indians, one of the five tribes comprising the Iroquois, Iroquois Confederacy. Society of Jesus, Jesuit missionaries from New France in present-day Quebec had a mission to convert the Cayuga as early as 1657. 18th century Saponi and Tutelo peoples ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southlands College, Roehampton
Southlands College, in Roehampton in the London Borough of Wandsworth, is one of four colleges at the University of Roehampton and is the location of the University's Business School and its Department of Media, Culture and Language. It was established by the Methodist Church in 1872, originally in Battersea, as a teacher training college for women and became coeducational in 1965. In 1975, the college became part of the Roehampton Institute of Higher Education, which became Roehampton University in 2004. The college includes Mount Clare House, a grade I listed building designed by Sir Robert Taylor, and a Methodist chapel. See also * Armorial of UK universities The armorial of British universities is the collection of coats of arms of universities in the United Kingdom. Modern arms of universities began appearing in England around the middle of the 15th century, with University of Oxford, Oxford's being ... * List of universities in the UK References External lin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Times
''The Times'' is a British Newspaper#Daily, daily Newspaper#National, national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its modern name on 1 January 1788. ''The Times'' and its sister paper ''The Sunday Times'' (founded in 1821), are published by Times Media, since 1981 a subsidiary of News UK, in turn wholly owned by News Corp. ''The Times'' and ''The Sunday Times'' were founded independently and have had common ownership only since 1966. It is considered a newspaper of record in the UK. ''The Times'' was the first newspaper to bear that name, inspiring numerous other papers around the world. In countries where these other titles are popular, the newspaper is often referred to as or , although the newspaper is of national scope and distribution. ''The Times'' had an average daily circulation of 365,880 in March 2020; in the same period, ''The Sunday Times'' had an average weekly circulation of 647,622. The two ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toronto
Toronto ( , locally pronounced or ) is the List of the largest municipalities in Canada by population, most populous city in Canada. It is the capital city of the Provinces and territories of Canada, Canadian province of Ontario. With a population of 2,794,356 in 2021, it is the List of North American cities by population, fourth-most populous city in North America. The city is the anchor of the Golden Horseshoe, an urban agglomeration of 9,765,188 people (as of 2021) surrounding the western end of Lake Ontario, while the Greater Toronto Area proper had a 2021 population of 6,712,341. As of 2024, the census metropolitan area had an estimated population of 7,106,379. Toronto is an international centre of business, finance, arts, sports, and culture, and is recognized as one of the most multiculturalism, multicultural and cosmopolitanism, cosmopolitan cities in the world. Indigenous peoples in Canada, Indigenous peoples have travelled through and inhabited the Toronto area, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Association
The British Science Association (BSA) is a charity and learned society founded in 1831 to aid in the promotion and development of science. Until 2009 it was known as the British Association for the Advancement of Science (BA). The current Chief Executive is Hannah Russell. The BSA's mission is to get more people engaged in the field of science by coordinating, delivering, and overseeing different projects that are suited to achieve these goals. The BSA "envisions a society in which a diverse group of people can learn and apply the sciences in which they learn." and is managed by a professional staff located at their Head Office in the Wellcome Wolfson Building. The BSA offers a wide variety of activities and events that both recognise and encourage people to be involved in science. These include the British Science Festival, British Science Week, the CREST Awards, For Thought, The Ideas Fund, along with regional and local events. History Foundation The Association was founded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy (biology)
In biology, taxonomy () is the science, scientific study of naming, defining (Circumscription (taxonomy), circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxon, taxa (singular: taxon), and these groups are given a taxonomic rank; groups of a given rank can be aggregated to form a more inclusive group of higher rank, thus creating a taxonomic hierarchy. The principal ranks in modern use are domain (biology), domain, kingdom (biology), kingdom, phylum (''division'' is sometimes used in botany in place of ''phylum''), class (biology), class, order (biology), order, family (biology), family, genus, and species. The Swedish botanist Carl Linnaeus is regarded as the founder of the current system of taxonomy, having developed a ranked system known as Linnaean taxonomy for categorizing organisms. With advances in the theory, data and analytical technology of biological systematics, the Linnaean system has transfo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybridisation (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different variety (botany), varieties, subspecies, species or genus, genera through sexual reproduction. Generally, it means that each cell has genetic material from two different organisms, whereas an individual where some cells are derived from a different organism is called a chimera (genetics), chimera. Hybrids are not always intermediates between their parents such as in blending inheritance (a now discredited theory in modern genetics by particulate inheritance), but can show Heterosis, hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductive isolation, reproductively isola ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyploid
Polyploidy is a condition in which the biological cell, cells of an organism have more than two paired sets of (Homologous chromosome, homologous) chromosomes. Most species whose cells have Cell nucleus, nuclei (eukaryotes) are diploid, meaning they have two complete sets of chromosomes, one from each of two parents; each set contains the same number of chromosomes, and the chromosomes are joined in pairs of homologous chromosomes. However, some organisms are polyploid. Polyploidy is especially common in plants. Most eukaryotes have diploid somatic cells, but produce haploid gametes (eggs and sperm) by meiosis. A Ploidy, monoploid has only one set of chromosomes, and the term is usually only applied to cells or organisms that are normally diploid. Males of bees and other Hymenoptera, for example, are monoploid. Unlike animals, plants and multicellular algae have Biological life cycle, life cycles with two alternation of generations, alternating multicellular generations. The gamet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rosa (plant)
A rose is either a woody perennial plant, perennial flowering plant of the genus ''Rosa'' (), in the family Rosaceae (), or the flower it bears. There are over three hundred Rose species, species and Garden roses, tens of thousands of cultivars. They form a group of plants that can be erect shrubs, climbing, or trailing, with stems that are often armed with sharp Thorns, spines, and prickles, prickles. Their flowers vary in size and shape and are usually large and showy, in colours ranging from white through pinks, reds, oranges and yellows. Most species are native to Asia, with smaller numbers native to Europe, North America, and Northwest Africa. Species, cultivars and hybrid (biology), hybrids are all widely grown for their beauty and often are fragrant. Roses have acquired cultural significance in many societies. Rose plants range in size from compact, miniature roses to climbers that can reach seven meters in height. Different species hybridize easily, and this has been use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromosome
A chromosome is a package of DNA containing part or all of the genetic material of an organism. In most chromosomes, the very long thin DNA fibers are coated with nucleosome-forming packaging proteins; in eukaryotic cells, the most important of these proteins are the histones. Aided by chaperone proteins, the histones bind to and condense the DNA molecule to maintain its integrity. These eukaryotic chromosomes display a complex three-dimensional structure that has a significant role in transcriptional regulation. Normally, chromosomes are visible under a light microscope only during the metaphase of cell division, where all chromosomes are aligned in the center of the cell in their condensed form. Before this stage occurs, each chromosome is duplicated ( S phase), and the two copies are joined by a centromere—resulting in either an X-shaped structure if the centromere is located equatorially, or a two-armed structure if the centromere is located distally; the jo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ranunculaceae
Ranunculaceae (, buttercup or crowfoot family; Latin "little frog", from "frog") is a family (biology), family of over 2,000 known species of flowering plants in 43 genera, distributed worldwide. The largest genera are ''Ranunculus'' (600 species), ''Delphinium'' (365), ''Thalictrum'' (330), ''Clematis'' (380), and ''Aconitum'' (300). Description Ranunculaceae are mostly herbaceous annuals or perennials, but some are woody climbers (such as ''Clematis'') or shrubs (e.g. ''Xanthorhiza''). Most members of the family have bisexual flowers which can be showy or inconspicuous. Flowers are solitary, but are also found aggregated in Cyme (botany), cymes, panicles, or spike (botany), spikes. The flowers are usually radially symmetrical but are also found to be bilaterally symmetrical in the genera ''Aconitum'' and ''Delphinium''. The sepals, petals, stamens and carpels are all generally free (not fused), the outer flower segments typically number four or five. The outer stamens may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John William Heslop-Harrison
John William Heslop Harrison, (1881–1967) was a professor of Botany at Kings College, Newcastle-Upon-Tyne, specialising in the genetics of moths. He is now best remembered for a widely recognised academic fraud.Michael A. Salmon, Peter Marren, Basil Harley. (2000). ''The Aurelian Legacy: British Butterflies and Their Collectors''. University of California Press. pp. 216–217. Early life and education He was born in Birtley on 22 January 1881, the son of George Heslop-Harrison, a pattern-maker at Birtley Iron Works. He was educated at Bede College School in Durham then Rutherford School for Boys in Newcastle upon Tyne. His mother was a keen gardener, and other influences such as his uncle, Rev J E Hull, and neighbour, Charles Robson, led him to an early interest in botany and natural history. He then studied at Durham College of Science, where he obtained a BSc degree in 1903. He did further postgraduate study at the University of Newcastle, gaining an MSc degree in 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
