ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • mutations  (1)
  • sexual isolation  (1)
  • 1
    Electronic Resource
    Electronic Resource
    The contribution of sexual behavior to Darwinian fitness (1987)
    Springer
    Behavior genetics 17 (1987), S. 597-611 
    Details
    ISSN: 1573-3297
    Keywords: sexual selection ; sexual isolation ; Drosophila
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract The idea that sexual selection is responsible for most of the characters, morphological, physiological, and behavioral, that are observed as subserving the efficiency of the reproductive act as an important monitor of fitness is developed. As a corollary, sexual isolation is downgraded, being considered a relatively unimportant secondary process for which the term “mechanism” is singularly inappropriate. The reproductive isolation frequently observed between allopatric species appears to me to be mostly an incidental out come of the fine tuning of the intrapopulational efficiency of the process of sexual reproduction. Two points are stressed: first, sexual selection is a powerful means of serving fitness; and second, hybridization poses little threat to the integrity or future well-being of a species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01065534
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Human genetic diversity, a critical resource for man's future (1993)
    Springer
    Biology and philosophy 8 (1993), S. 33-45 
    Details
    ISSN: 1572-8404
    Keywords: Human evolution ; genetics of populations ; genetic load ; mutations ; quantitative genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Philosophy
    Notes: Abstract The human gene pool displays exuberant genetic variation; this is normal for a sexual species. Even small isolated populations contain a large percentage of the total variability, emphasizing the basic genetic unity of our species. As modern man spread across the world from its African source, the genetic basis for man's unique mental acuity was retained everywhere. Nevertheless, some geographical genetic variation such as skin color, stature and physiognomy was established. These changes were biologically relatively insignificant. Most of the ‘genetic load’ in the genome has been carried throughout the history of the species. There is little hope of purging all of these harmful genes; we must accept them and continue to treat their syndromes medically. All populations carry extensive genetic variation due to genes that encode variations in quantitative traits. Of greatest importance among these is ubiquitous polygenic variability in brain function and intelligence. Mental acuity is what sets us apart from the rest of the biological world. Throughout our history, genetic recombination among the many genes involved in brain function has occurred. This has provided a genetic basis for the action of natural selection that favors intelligence in meeting the demands of the environment. As environments change in the future, this type of genetic variability will continue to be a crucial resource.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00868504
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...