Select from the frequently asked questions below
- The inheritance of characteristics is not always as simple as it is for the characteristics that Mendel studied in pea plants.
- Each characteristic Mendel investigated was controlled by one gene that had two possible alleles, one of which was completely dominant to the other.
- This resulted in just two possible phenotypes for each characteristic.
- Many genes have multiple (more than two) alleles.
- Skin color and adult height are examples of polygenic characteristics in humans.
- Do you have any idea how many phenotypes each characteristic in humans has?
In fruit flies the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. What are the possible combinations of genes in the offspring of two red-eyed heterozygous flies (Rr)?
Curly hair is recessive, and straight hair is dominant. A woman with curly hair marries a man who is homozygous dominant for straight hair. Predict the outcomes for their children.