Solved by a verified expert:Bio 161June 2014Extra Credit- Family Pedigree Project (up to 25 points)Due at the beginning of the final.For this project you will examine an autosomal or sex-linked trait and write a report explaininghow it is passed in your family. Please follow these instructions:1- The trait you chose must be Mendelian and you must have variation in your family.Your choices are: hitchhiker’s thumb, attached earlobe, cleft chin, crossing thumbs,tongue rolling, widow’s peak, Rh+ factor.2- Write a typed introduction explaining why you chose this trait and how you collectedthe data (5 points)3- Use standard symbols for the construction of the pedigree and identify yourself in it (5points).4- You must collect at least 3 generations (5 points). If you do not have access to threegenerations, you can predict one generation- what your parents or children would looklike. You cannot predict more than one generation. If you are predicting futuregenerations and do not have a spouse, make that person a homozygous recessive.Offspring should be two boys and two girls.5- Write the genotype of each individual and if some can have more than one genotype,explain all possibilities (10 points).Example of a pedigree showing four generations. Note that generations are not labeled and genotypeand phenotype are not explained.