Abstract
The classroom is the great source for the collection of phenotypic characters these generation is responsible to their next progeny. Phenotypic characters are common, visible and easily observable from external appearance of human being. Dominant and recessive characteristics of phenotypic behavior, which is observed in male and female with few exceptions. Some common and important phenotypic characteristics are discuss in this paper. Examples-This study aimed at determining the incidence of 20 characteristics – 10 dominant- window’s peak ,black hair curly hair ,brown eye, long eyelash, free earlobe , large nose, broad lips, rolling tongue, dimples present, cleft chin ,hairs on fingers ,right handedness, normal skin with melanin. 10 recessive – straight hair line, light black hair, straight hair, blue eye, short eyelash, color blindness, attached earlobes, small nose, thin lips, cannot able to roll of the tongue, dimples absent, smooth chin, no hairs on fingers, left handedness, albino skin and the data is collected from surrounding around 200 students (young once) are observed for the study of probability of phenotypic characters with the help of physical examination and questionnaires. The dominant and recessive characters determine by combination of different alleles. The study found that there was no significant difference between the number of dominant and recessive characters with most of the traits showing the same pattern of expression in either sex dominant and recessive characters are totally depends on the genetic expression . mendelian traits plays important role in identification and characteristics of human being from their morphological characteristics. The present study of inheritance was conducted to across random population for the morphological traits.