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Kathleen Bever 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 Fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ithaca, New York
Ithaca is a city in the Finger Lakes region of New York (state), New York, United States. Situated on the southern shore of Cayuga Lake, Ithaca is the seat of Tompkins County, New York, Tompkins County and the largest community in the Ithaca metropolitan statistical area. It is named after the Greek island of Ithaca (island), Ithaca. A college town, Ithaca is home to Cornell University and Ithaca College. Nearby is Tompkins Cortland Community College (TC3). These three colleges bring thousands of students to the area, who increase Ithaca's seasonal population during the school year. As of 2020, the city's population was 32,108. History Early history Native Americans lived in this area for thousands of years. When reached by Europeans, this area was controlled by the Cayuga tribe of Indians, one of the Five Nations of the ''Haudenosaunee'' or Iroquois League. Society of Jesus, Jesuit missionaries from New France (Quebec) are said to have had a mission to convert the Cayug ... [...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 Oxford's being possibly the oldest ... * List of universities in the UK References External link ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Times
''The Times'' is a British daily national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its current name on 1 January 1788. ''The Times'' and its sister paper '' The Sunday Times'' (founded in 1821) are published by Times Newspapers, since 1981 a subsidiary of News UK, in turn wholly owned by News Corp. ''The Times'' and ''The Sunday Times'', which do not share editorial staff, were founded independently and have only had common ownership since 1966. In general, the political position of ''The Times'' is considered to be centre-right. ''The Times'' is the first newspaper to have borne that name, lending it to numerous other papers around the world, such as '' The Times of India'', ''The New York Times'', and more recently, digital-first publications such as TheTimesBlog.com (Since 2017). In countries where these other titles are popular, the newspaper is often referred to as , or as , although the newspaper is of na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toronto
Toronto ( ; or ) is the capital city of the Provinces and territories of Canada, Canadian province of Ontario. With a recorded population of 2,794,356 in 2021, it is the List of the largest municipalities in Canada by population, most populous city in Canada and 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. 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, located on a broad sloping plateau interspersed with Toronto ravine system, rivers, deep ravines, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Association
The British Science Association (BSA) is a Charitable organization, 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 Katherine Mathieson. 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 recognize and encourage people to be involved in science. These include the British Science Festival, British Science Week, the CREST Awards, Huxley Summit, Media Fellowships Scheme, along with regional and local events. Histor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy (biology)
In biology, taxonomy () is the scientific study of naming, defining ( circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into 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, kingdom, phylum (''division'' is sometimes used in botany in place of ''phylum''), class, order, family, genus, and species. The Swedish botanist Carl Linnaeus is regarded as the founder of the current system of taxonomy, as he developed a ranked system known as Linnaean taxonomy for categorizing organisms and binomial nomenclature for naming organisms. With advances in the theory, data and analytical technology of biological systematics, the Linnaean system has transformed into a system of modern biological classification intended to reflect the ... [...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 breeds, varieties, species or genera through sexual reproduction. Hybrids are not always intermediates between their parents (such as in blending inheritance), but can show 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 reproductively isolated by strong barriers to hybridisation, which include genetic and morphological differences, differing times of fertility, mating behaviors and cues, and physiological rejection of sperm cells or the developing embryo. Some act before fertilization and others after it. Similar barriers exist in plants, with differences in flowering ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyploid
Polyploidy is a condition in which the cells of an organism have more than one pair of (homologous) chromosomes. Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two sets of chromosomes, where each set contains one or more chromosomes and comes from each of two parents, resulting in pairs of homologous chromosomes between sets. 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 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 life cycles with two alternating multicellular generations. The gametophyte generation is haploid, and produces gametes by mitosis, the sporophyte generation is diploid and produces spores ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rosa (plant)
A rose is either a woody perennial flowering plant of the genus ''Rosa'' (), in the family Rosaceae (), or the flower it bears. There are over three hundred species and 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 prickles. Their flowers vary in size and shape and are usually large and showy, in colours ranging from white through yellows and reds. Most species are native to Asia, with smaller numbers native to Europe, North America, and northwestern Africa. Species, cultivars and 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 used in the development of the wide range of garden roses. Etymology The name ''rose'' comes f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromosome
A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are the histones. These proteins, aided by chaperone proteins, bind to and condense the DNA molecule to maintain its integrity. These chromosomes display a complex three-dimensional structure, which plays a significant role in transcriptional regulation. Chromosomes are normally 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 happens, each chromosome is duplicated (S phase), and both copies are joined by a centromere, resulting either in an X-shaped structure (pictured above), if the centromere is located equatorially, or a two-arm structure, if the centromere is located distally. The joined copies are now ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ranunculaceae
Ranunculaceae (buttercup or crowfoot family; Latin "little frog", from "frog") is a 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'' (325), 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 cymes, panicles, or 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 be modified to produce only nectar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John William Heslop-Harrison
Prof John William Heslop Harrison, FRS FRSE (1881–1967), was Professor of Botany at King's College, Durham University (now Newcastle University). He enjoyed a brilliant career, specialising in the genetics of moths, but is now best remembered for an alleged 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, graduating BSc in 1903. He did further postgraduate study at the Universit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
