Genetics Pre-Assessment

DNA replication is an important part of cellular division because correct replication–

• ensures that identical and complete genetic information is passed to both daughter cells.

• produces mutations that usually are advantageous for the survival of the organism.

• combines sperm and egg to form a zygote that will develop into a new organism.

• communicates information about the cellular environment to adjacent cells.

Which of the following processes will take place during the G1 phase of the cell cycle?

• Cell division

• Growth of the cell

• DNA replication

• Protein synthesis

Mitosis maintains complex organisms by which of the following processes?

• The removal of waste from the body

• The exchange of gas with the environment

• The formation of sperm and egg

• The healing of a cut after an injury

Which of the following describes prophase of mitosis?

• Daughter chromosomes move toward opposite poles of the cell.

• Homologous chromosomes line up along the equator of the cell.

• Cytoplasm divides as the cell prepares to become two new cells.

• Chromosomes condense and the nuclear membrane breaks down.

Uncontrolled cell division may lead to–

• mitosis

• replication

• cancer

• cytokinesis