Biology 2017 JAMB Past Questions - Question 3: Ability to taste PTC in some individual is a character that is

Correct Answer

B

Explanation

it is a trait that is transmitted by genes from parents to offspring. During meiosis, there Is crossing over of genes A segment from a member of a pair of homologous chromosomes called bivalent cuts off at the chloasma and joins the other. After the formation of gametes there is random recombination of the gametes of the parents. Ability totaste a bitter chemical called phenyl thiocarbamide (PTC) is a physiologicaltrait which can only be seen when the individual carries out the function of tasting the chemical {behaviour}. It is not morphological ie one cannot notice it by mere looking at the person. Acquired trait is a trait which one learns from its environment and is not transmittable. sex linked trait is a trait that is carried by X- sex chromosome only. the traits are hemophilia, colour blindness and baldness.