Week 4 Discussion: Inheritance
Pick one trait that is controlled (mostly) by one gene in a dominant/recessive manner. This trait can either be one found in your family, or you can use a made-up example.
Do a web search for dominant/recessive human traits, keeping in mind that most of our traits are not controlled by just one gene in a simple dominant/recessive manner.
Answer the following questions about your chosen trait:
What is your (or the made-up person’s) phenotype for this trait?
What is your (or the made-up person’s) likely genotype for this trait? Note: there may be more than one possible genotype.
What are the phenotypes and genotypes for the biological parents/siblings, or the biological children for this trait? (you need two generations)
Show a likely Punnett Square for this trait in the described biological family (yours or the made-up example).
Are there other factors that may determine the phenotype for this particular trait? Is more than one gene likely involved? Is this trait impacted by environmental factors?
Include references to all information sources used in APA format.
Reply to at least two other students’ posts. Your replies should be substantial and contribute to learning. Help the other students correct mistakes in their Punnett Square based on the provided information about genotypes and phenotypes. Consider whether their chosen trait is controlled by one gene in a simple dominant/recessive manner or if more than one gene, and environmental factors, are controlling their chosen trait.
The best way to create a Punnett Square in a discussion post is to use the Insert Table option under the + sign, and to choose a 3×3 table:
