Page 154 - 86 human physiology part-2

Genetics and Inheritance

Sickle Cell Anemia: recessive disorder in which red blood cells take on an unusual shape, leading
to other problems with the blood

Synthesize: to make using biochemical processes

Unifactorial Inheritance: trait or disorder determined by a single pair of genes

Zygote: cell formed by the union of male and female gametes. A Zygote is a cell that is the result
of fertilization.

Review Questions

1: What is the difference between multifactorial and unifactorial?
2: What are some signs and symptoms of cystic fibrosis?
3: What are some of the good things that genetic engineering can be used for?
4: Mutations are changes in the genetic material of the cell. What are three things that can cause
mutations?
5: What are some of the diseases that now have cures or treatments due to gene therapy?
6: Can a child be born with a birth defect when there is no other apparent connection to other
family members having the same defect?
7: What are the differences between genotypes and phenotypes?
8: Define modifying genes and regulator genes and give an example of both.

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