Calliste:

Yes, skin color is influenced by genetic factors. Kindly see this link for insights:

Best

Syed

Hi Callixte, please examine the work of Dr Eirikur Steingrimson and his work on the MITF gene control system of melanocytes.

Dear Callixte

The skin color results from genetic and environmental factors, please read in the following links:

http://research.hudsonalpha.org/Barsh/wp-content/BarshLabManuscriptPDFs/BarshPLosBiolMystery2003.pdf

and

https://www.researchgate.net/profile/Jonathan_Rees/publication/9010476_Genetics_of_Hair_and_Skin_Color/links/0fcfd508a386ca577f000000/Genetics-of-Hair-and-Skin-Color.pdf?origin=publication_list

Good Luck

Article Genetics of Hair and Skin Color

Dear Khalid, i really thank you for this literature i see it will contribute to my study. hope to share with you all.

A very small portion of the human genome is associated with skin color. Please see the following references that emphasize the very small component of our genome associated with traits considered to represent "race"- a concept evolutionary science is trying to replace with "ethnicity" as it does not have the unwarranted assumptions of long temporal separations and significant differences between human populations. 

 i Really enjoy research gate! now i see my critical review part of my work. i do thank all of you who participated to respond my question. 

All the best

Dear Callixte:

The colour of the feathers depends on: the presence of pigments, light effects on the feathers' structure, environmental aspects, presence of microbial communities on the surface of the feathers and for sure, it is also genetically controlled.

Here you have some interesting papers about this subject:

Article Genetic Basis for Red Coloration in Birds

Article Occurrence of viable, red-pigmented haloarchaea in the pluma...

Article Bird Integumentary Melanins: Biosynthesis, Forms, Function a...

Article Evolutionary shifts in the melanin-based color system of birds

Article The genetic basis of color-related local adaptation in a rin...

Dear Rose,

Thanks for your important response. however environmental factors has a huge role in skin color determination. Human migrated from Africa to other parts of the world, this migration created righter skin color in mankind. Melanin production also is based on environmental situation. We are a part of the nature as a whole, whose order we follow ''Spinoza'' Genes responsible for skin color respond to environmental order. for information read Charles Darwin theory and his successors. wish you the best of Christmas. Callixte