Search results
Results from the WOW.Com Content Network
Although neutral evolution remains the consensus theory among modern biologists, [3] and thus Kimura's resolution of Haldane's dilemma is widely regarded as correct, some biologists argue that adaptive evolution explains a large fraction of substitutions in protein coding sequence, [4] and they propose alternative solutions to Haldane's dilemma.
In humans, barring intersex conditions causing aneuploidy and other unusual states, it is the male that is heterogametic, with XY sex chromosomes.. Haldane's rule is an observation about the early stage of speciation, formulated in 1922 by the British evolutionary biologist J. B. S. Haldane, that states that if — in a species hybrid — only one sex is inviable or sterile, that sex is more ...
Haldane's article on abiogenesis in 1929 introduced the "primordial soup theory", which became the foundation for the concept of the chemical origin of life. He established human gene maps for haemophilia and colour blindness on the X chromosome, and codified Haldane's rule on sterility in the heterogametic sex of hybrids in species.
A Mathematical Theory of Natural and Artificial Selection is the title of a series of scientific papers by the British population geneticist J.B.S. Haldane, published between 1924 and 1934. Haldane outlines the first mathematical models for many cases of evolution due to selection , an important concept in the modern synthesis of Darwin's ...
Haldane's sieve is particularly relevant in situations where the effects of natural selection are strong and the beneficial mutations have a significant impact on an organism's fitness. According to Haldane's sieve, when a new advantageous mutation arises in a population, it initially occurs as a single copy (a de novo mutation ), borne by an ...
Pages in category "Works by J. B. S. Haldane" The following 6 pages are in this category, out of 6 total. ... Haldane's dilemma; Haldane's rule; O. On Being the Right ...
The Causes of Evolution is a 1932 book on evolution by J.B.S. Haldane (1990 edition ISBN 0-691-02442-1), based on a series of January 1931 lectures entitled "A Re-examination of Darwinism". It was influential in the founding of population genetics and the modern synthesis .
Hemorrhagic septicemia is the most important bacterial disease of cattle and buffaloes in Pakistan. [30] In Pakistan, it is a disease of great economic importance; in the Punjab province alone, the financial losses due to HS were estimated to be more than 2.17 billion Pakistani rupees (equivalent to 58 million USD) in 1996.