THE ENVIRONMENTAL AND GENETIC CONTROL OF SEASONAL POLYPHENISM IN LARVAL COLOR AND ITS ADAPTIVE SIGNIFICANCE IN A SWALLOWTAIL BUTTERFLY

Evolution ◽  
2002 ◽  
Vol 56 (2) ◽  
pp. 342 ◽  
Author(s):  
Wade N. Hazel
Keyword(s):  
Genetic Control ◽  
Adaptive Significance ◽  
Swallowtail Butterfly ◽  
Seasonal Polyphenism

scholarly journals The Nature and Genetic Control of a Red Anthocyanin Pigment in the Root Meristems of Phalaris

1964 ◽  
Vol 17 (3) ◽  
pp. 601 ◽  
Author(s):  
JR Mowllliam JR Mowllliam
Keyword(s):  
Genetic Control ◽  
Single Gene ◽  
Dominant Gene ◽  
Low Frequency ◽  
Adaptive Significance ◽  
Gene Marker ◽  
Polyploid Species ◽  
Anthocyanin Pigment ◽  
Genetic Studies ◽  
Root Meristems

A red anthocyanin pigment which occurs in the root meristems of certain PhalariB species has been identified as a glycoside of pelargonidin. The pigment has been observed only in plants of the three polyploid species P. minor, P. tuberosa, and P. arundinacea, and is absent in the diploid members of the genus. Genetic studies indicate that the character is simply inherited, involving a single major dominant gene controlling the production of the pigment, and a series of modifier genes influencing the level of its expression. In P. minor, a self.pollinating annual, the gene is widespread and homozygous, but in P. tuberosa and P. arundinacea, both cross-pollinating perennials, it occurs at low frequency largely as the hetero-zygote, and is restricted to certain areas within the range of the distribution of these species. The origin of the gene in Phalaris, and its possible adaptive significance is discussed. Also its value as a single gene marker in breeding studies is indicated.

Genetic Control of DH Reading Frame and Its Effect on B-Cell Development and Antigen-Specifc Antibody Production

2010 ◽  
Vol 30 (4) ◽  
pp. 327-344 ◽  
Author(s):  
Harry W. Schroeder, Jr. ◽  
Michael Zemlin ◽  
Mohamed Khass ◽  
Huan H. Nguyen ◽  
Robert L. Schelonka
Keyword(s):  
B Cell ◽  
Genetic Control ◽  
Antibody Production ◽  
Cell Development ◽  
B Cell Development ◽  
Reading Frame
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