Open main menu

Biolecture.org β

Changes

Week 4/Genomics 2016/Yoon Changhan

1,028 bytes added, 15:15, 7 October 2016
no edit summary
<p><strong>Defects on Pangenesis</strong></p>
 
<p>1. Pangenesis can not explain Mendel&#39;s Cross expriments.</p>
 
<p>&nbsp;Gregor&nbsp;Mendel&#39;s study totally defeated Darwin&#39;s mechanism. Mendel proved that heredity has at least one&nbsp;certain discrete unit to express one trait. Unfortunately gemmule couldn&#39;t be that unit as it was continuous concept and did not have method to&nbsp;explain law of dominance, segregation and independent assortment..</p>
 
<p>2. Acquired traits are not inherited.</p>
 
<p>&nbsp;Lamarckism was very similar to Darwinism in that both were trying to explain that&nbsp;evolution occured&nbsp;within relatively&nbsp;short time. Both are not true because acquired traits are not inherited (but epigenome), which cannot affect phynotypes.&nbsp;</p>
 
<p>3. Pangenesis can not explain planting cutting&nbsp;(asexual propagation)</p>
<p>&nbsp;</p>
<p><strong>Reference</strong></p>
 
<p>https://en.wikipedia.org/wiki/Pangenesis</p>
 
<p>https://en.wikipedia.org/wiki/Gemmule_(pangenesis)</p>
 
<p>https://en.wikipedia.org/wiki/On_the_Origin_of_Species</p>
 
<p>&nbsp;</p>
 
<p>&nbsp;</p>