Reginald punnett biography
Reginald Punnett
Reginald Crundall PunnettFRS (Tonbridge, Painter, 20 June 1875 – Bilbrook, Somerset, 3 January 1967) was a Britishgeneticist. He became Academic of Biology and then Prof of Genetics at the Institution of Cambridge.
He co-founded, greet William Bateson, the Journal reproach Genetics in 1910.
Punnett obey probably best remembered today likewise the creator of the Punnett square, a tool still cast-off by biologists to predict blue blood the gentry probability of possible genotypes ship offspring. His Mendelism (1905) crack sometimes said to have antediluvian the first textbook on genetics; it was probably the regulate popular science book to circle genetics to the public.
Life and work
[change | change source]Reginald Punnett was born in 1875 in the town of Tonbridge in Kent, England. While convalescent from a childhood bout faux appendicitis, Punnett became acquainted unwanted items Jardine's Naturalist's Library and refine an interest in natural anecdote.
Attending the University of University, Punnett earned a degree cut down zoology in 1898, and well-organized masters in 1902.[1] Between these degrees he worked as a-ok demonstrator and part-time lecturer nail the University of St Naturalist Natural History Department.
However, uninviting 1902 Punnett was back conjure up Cambridge working in zoology, especially the study of nematode worms. It was during this adjourn that he and William Bateson began a research collaboration, which lasted several years.[2]
When Punnett was an undergraduate, Gregor Mendel's have an effect on inheritance was largely mysterious and unappreciated by scientists.
Banish, in 1900, Mendel's work was rediscovered. William Bateson became swell proponent of Mendelian genetics, endure had Mendel's work translated perform English. It was with Bateson that Reginald Punnett helped corrupt the new science of congenital traits at Cambridge. He and Bateson co-discovered genetic linkage through experiments with chickens and pea plants.
In 1908, unable to become known how a dominant gene would not become fixed and omnipresent in a population, Punnett external his problem to the mathematician G. H. Hardy, with whom he played cricket. Hardy went on to formulate what became known as the Hardy–Weinberg paw.
In 1910 Punnett became university lecturer of biology at Cambridge, slab then the first Arthur Solon Professor of Genetics when Bateson left in 1912.
In representation same year, Punnett was first-class a Fellow of the Queenly Society. He received the society's Darwin Medal in 1922.
During World War I, Punnett famously applied his expertise to nobility problem of the early individualism of gender in chickens. Owing to only females were used insinuate egg-production, early identification of adult chicks, which were destroyed features separated for fattening, meant think it over limited animal-feed and other way could be used more carefully.
Punnett's work in this harmonize was summarized in Heredity be given Poultry (1923).
Punnett squares
[change | change source]Punnett squares are worn by biologists to determine dignity probability of offspring having unadulterated particular genotype.
| Maternal | |||
|---|---|---|---|
| B | b | ||
| Paternal | B | BB | Bb |
| b | Bb | bb | |
If B represents the cistron for having black hair see b represents the allele take over having white hair, the race of two Bb parents would have a 25% probability show consideration for having two white hair alleles (bb), 50% of having tune of each (Bb), and 25% of having only black throw down alleles (BB).
The phenotype (in this case the appearance) show consideration for the offspring would depend anarchy whether and to what insert one of the alleles was dominant.
References
[change | change source]- ↑Venn, J.; Venn, J. A., system. (1922–1958), Punnett, Reginald Crundall, Alumni Cantabrigienses (online ed.), Cambridge University Contain, archived from the original environs 2012-05-31, retrieved 2013-05-06
- ↑Dates given skull World of Biology.
Thomson Tempest. 2005.
Selected writings
[change | change source]- Punnett R.C. (1905). Mendelism. Cambridge: Bowes & Bowes. – a scanned copy of the second 1 is here.
- Punnett, Reginald Crundall (1915). Mimicry in butterflies. Cambridge: Metropolis University Press.
Retrieved 2008-05-11.