prenatal: Genetic Factors

What are alleles?

• Different forms of a gene.

• Segments of DNA that code for proteins.

• Structures found in the nucleus of cells.

• Units of heredity passed from parents to offspring.

How is Polydactyly inherited?

• It is caused by two recessive alleles.

• It is caused by a dominant allele.

• It is caused by a mutation during development.

• It is caused by environmental factors.

What genetic condition is required for an individual to have Cystic Fibrosis?

• One dominant allele.

• One recessive allele.

• Two dominant alleles.

• Two recessive alleles.

What is the primary purpose of embryo screening?

• To select embryos with desired physical traits.

• To ensure embryos do not suffer from inherited genetic disorders.

• To increase the number of embryos for implantation.

• To determine the sex of the embryo.