BIO 101 Lab 7 Mendelian Genetics SUMMER 2024

Lab Report Format Expectations Utilize college level grammar and professional formatting when completing this worksheet. Pre-Lab Questions 1. In a species of mice, brown fur color is dominant to white fur color. When a brown mouse is crossed with a white mouse all of their offspring have brown fur. Why did none of the offspring have white fur? The offsprings did not have white fur because the bown fur is more domnant 2. Can a person’s genotype be determined by their phenotype? Why or why not? What is the difference between genotype and phenotype? No, a persons genotype cannot be determined by their phenotype. Genotype detrmines phenotype. Genotype is the genetics of an individual and phenotype is the physical make up of an individual. 3. Are incomplete dominant and co-dominant patterns of inheritance found in human traits? If yes, give examples of each. Yes, both incomplete and co-dominance can be found in humans. the allele for curly hair (C) and the allele for straight hair (S) are both incompletely dominant. When a curlyhaired parent (homozygous dominant genotype: CC) and a straight-haired parent (homozygous recessive genotype: SS) have children, the offspring inherit one allele from each parent. As a result, the children will have a wavy hair texture (heterozygous genotype: CS), which represents an intermediate phenotype between the parents' traits. The A and B alleles for blood type are codominant. If a mother has type A blood with genotype AA and the father has type B blood with genotype BB, neither allele is recessive. The offspring inherits one allele from each parent. Since both A and B alleles