1.4

33 %
67 %
Information about 1.4

Published on September 22, 2008

Author: netzwellenedu

Source: slideshare.net

AIM: How can organisms be improved using the idea of natural selection? Warm – up: In evolutionary terms, why is one organism more likely to survive than another?

Artificial selection § Artificial breeding can use variations in populations to create vastly different “breeds” & “varieties”

Artificial selection § Artificial breeding can use variations in populations to create vastly different “breeds” & “varieties” “descendants” of the wolf

Artificial selection § Artificial breeding can use variations in populations to create vastly different “breeds” & “varieties” “descendants” of wild mustard “descendants” of the wolf

Artificial selection § Artificial breeding can use variations in populations to create vastly different “breeds” & “varieties” “descendants” of wild mustard “descendants” of the wolf

Selective Breeding

Selective Breeding Selective Breeding: Process in which

Selective Breeding Selective Breeding: Process in which particular individuals are chosen and allowed

Selective Breeding Selective Breeding: Process in which particular individuals are chosen and allowed to breed, whereas others are prevented from

Selective Breeding Selective Breeding: Process in which particular individuals are chosen and allowed to breed, whereas others are prevented from breeding.

Selective Breeding Selective Breeding: Process in which particular individuals are chosen and allowed to breed, whereas others are prevented from breeding. • Alleles that give characteristics favored by humans are retained, while undesirable characteristics are eliminated.

Selective Breeding Selective Breeding: Process in which particular individuals are chosen and allowed to breed, whereas others are prevented from breeding. • Alleles that give characteristics favored by humans are retained, while undesirable characteristics are eliminated. • Raw genetic material is hidden and often allows for hidden variations to show through

Selective Breeding Selective Breeding: Process in which particular individuals are chosen and allowed to breed, whereas others are prevented from breeding. • Alleles that give characteristics favored by humans are retained, while undesirable characteristics are eliminated. • Raw genetic material is hidden and often allows for hidden variations to show through

Selective Breeding Selective Breeding: Process in which particular individuals are chosen and allowed to breed, whereas others are prevented from breeding. • Alleles that give characteristics favored by humans are retained, while undesirable characteristics are eliminated. • Raw genetic material is hidden and often allows for hidden variations to show through

Selective Breeding Selective Breeding: Process in which particular individuals are chosen and allowed to breed, whereas others are prevented from breeding. • Alleles that give characteristics favored by humans are retained, while undesirable characteristics are eliminated. • Raw genetic material is hidden and often allows for hidden variations to show through

Selection § Artificial selection is similar to directional selection. § Similarities? § Differences?

Inbreeding § Involves breeding between closely related individuals with some desirable trait as the outcome § Loss of genetic diversity § If loss occurs to the extent at which every individual has identical alleles, that is referred to as complete homozygosity § Why is this a problem?

Yorkshire Terriers (Yorkies)

Yorkshire Terriers (Yorkies)

Yorkshire Terriers (Yorkies)

Bassett Hound

Bassett Hound

Bassett Hound

Example of Inbreeding in Plants § Wheat plants generally self pollinate Ø High yield Ø Short stems Ø Pest resistance Ø High protein content of grain

Outbreeding § Involves crossing individuals from genetically distinct strains to form hybrids. § Hybrids have characteristics which are superior to the characteristics in either parent. (Hybrid vigour / Heterosis)

Liger

Mule

Mule

Mule

Mule

HOMEWORK § Complete Ques. 3 from Classwork H.O. § Read p. 450 – 453

Add a comment

Related presentations

Related pages

VW Polo 1.4 Gebrauchtwagen – mobile.de

Sie suchen einen VW Polo 1.4 in Ihrer Nähe? Finden Sie VW Polo 1.4 Angebote in allen Preiskategorien bei mobile.de – Deutschlands größtem Fahrzeugmarkt
Read more

Suchergebnis auf Amazon.de für: Fotoschraube 1/4 Zoll

Fügen Sie ihn zu einer qualifizierten Bestellung hinzu, um ihn am morgen, 31. August zu erhalten
Read more

LEGO Harry Potter: Die Jahre 1 - 4 - YouTube

Mit LEGO Harry Potter: Die Jahre 1-4 verschmelzen zwei der beliebtesten Franchises zu einem magischen Abenteuer-Spiel. Basierend auf den ersten vier Harry ...
Read more

Opel Astra 1.4 ecoFLEX Gebrauchtwagen – mobile.de

Sie suchen einen Opel Astra 1.4 ecoFLEX in Ihrer Nähe? Finden Sie Opel Astra 1.4 ecoFLEX Angebote in allen Preiskategorien bei mobile.de – Deutschlands ...
Read more

PROXXON - 1/4'' (6,3 mm) Steckschlüssel-Einsätze

1/4'' - T-Griff mit Gleitstück: 100 mm: NO 23 704: 1/4'' - Verlängerung: 50 mm 100 mm 150 mm: NO 23 707 NO 23 708 NO 23 705: 1/4'' - Flexible Verlängerung
Read more

repdoc Katalog

Auf dieser Seite können Sie mehrere Accounts hinterlegen, über die Sie sich später durch einfaches Klicken anmelden können
Read more

1/4 Zoll AG x 1/2 Zoll IG, Gewindeadapter, Übergangsstück ...

1/4 Zoll AG auf 1/2" Innengewinde mit Dichtung 1/4" AG x 1/2" IG, Gewindeadapter, Übergang, Einviertel Zoll Gewinde auf Halbzoll Innen-Gewinde
Read more

Updates | Landwirtschafts-Simulator

» Änderungsliste Update 1.4.2 (*) Bitte beachten Sie, dass dieses Update nicht für die Steam oder Mac OS X Version verwendet werden kann. Die Steam und ...
Read more

1/2 + 1/4 + 1/8 + 1/16 + ⋯ - Wikipedia, the free encyclopedia

In mathematics, the infinite series 1/2 + 1/4 + 1/8 + 1/16 + · · · is an elementary example of a geometric series that converges absolutely. Its sum is
Read more

Download der kostenlosen Java-Software

Welche Gründe sprechen für den Download von Java? Mit der Java-Technologie können Sie in einer sicheren Rechnerumgebung arbeiten und spielen.
Read more