While there have been many advances in our understanding of the genetics of pathological skin pigmentation in humans, our knowledge about what determines variation in normal skin color is still incomplete. Variation in one gene, melanocortin 1 receptor (MC1R), has been associated with red hair and fair skin in Europeans. However, this gene might also play an important role in shaping pigmentati...

The aim of this research was to evaluate the effect variation in number and diversity colors, coat pattern, skin color its on longevity etnological indices local goats from Northern Mexico. Two hundred fifty-one adult were chosen. aforementioned variables recorded addition age, live weight (LW), body condition (BC), fifteen zoometric traits. Seventeen calculated. group with two colors different...

Biology 321 This article reflects important themes that we will explore in this course: • The value of studying model organisms • The molecular basis of allelic variation and how it affects phenotype • In complex traits, allelic variation in more than one gene underlies phenotypic variation • Allele frequencies vary with the population under consideration • The genetic control of many traits is...

The color of the skin, hair and eye is controlled by multiple genes and is among the most visible examples of human phenotypic variation. Genetics correlate phenotypic with genotypic variation. Recent scientific work reveals DNA polymorphisms at least partially responsible for some of the differences observed in human pigmentation. These are the focus of this review.

In this paper we have proposed a novel method called automatic segmentation of skin lesion in conventional macroscopic images. Many approaches have been proposed to determine the skin cancer. An extensive literature survey is done to study the state-of-art techniques for skin cancer recognition; level set active contours (LSAC), skin lesion segmentation (SLS) and multidirectional gradient vecto...

We examined the development of racial categorizations of faces spanning the European-East Asian ("White-Asian") categorical continuum in children between the ages of four and nine as well as adults. We employed a stimulus set that independently varied skin color and other aspects of facial physiognomy, allowing the contribution of each to be assessed independently and in interaction with each o...

Variation in human skin and hair color is the most notable aspect of human variability and several studies in evolution, genetics and developmental biology contributed to explain the mechanisms underlying human skin pigmentation, which is responsible for differences in skin color across the world's populations. Despite skin pigmentation is primarily related to melanocytes functionality, the sur...

To provide better customer service, NCJRS has made this Federally-funded grant final report available electronically in addition to traditional paper copies. Opinions or points of view expressed are those of the author(s) and do not necessarily reflect the official position or policies of the U.S. 1. Abstract The overall goal of this research project was to determine with a high degree of accur...

In this paper we propose a method to detect human faces in color images. Many existing systems use a window-based classifier that scans the entire image for the presence of the human face and such systems suffers from scale variation, pose variation, illumination changes, etc. Here, we propose a lighting insensitive face detection method based upon the edge and skin tone information of the inpu...

The presence of illumination variation in dermatological images has a negative impact on the automatic detection and analysis of cutaneous lesions. This paper proposes a new illumination modeling and chromophore identification method to correct lighting variation in skin lesion images, as well as to extract melanin and hemoglobin concentrations of human skin, based on an adaptive bilateral deco...