Unit 4 Mitosis, Meiosis

How are mitosis and meiosis similar?

• both have two cell divisions

• both require DNA replication

• both produce gametes

• both involve crossing over

Which biological process determines the probability that particular alleles will be found in any given gamete?

• mutation

• meiosis

• cell cycle

• protein synthesis

What would most likely be produced when a cell with eight chromosomes undergoes mitosis?

• two cells with four chromosomes each

• two cells with eight chromosomes each

• four cells with four chromosomes each

• four cells with eight chromosomes each

When a cell divides by mitosis, what will be the genetic composition of the resulting two cells?

• They will be identical.

• There will be major differences.

• They will have minor differences.

• They will have one half the genes of the original.

What role does the centromere play in cellular reproduction?

• A. It is the area where microtubules are formed

• It is the area where the nucleus is during cell division.

• It is the area of alignment for the chromosomes.

• It is the area of attachment for chromatids

Which factor BEST explains how many diseases, such as cancer, are formed within the body?

• A traumatic injury to the body has occurred.

• A disruption in the cell cycle has taken place.

• A response by the immune system was triggered by an allergic reaction.

• A mutation occurred during the process of crossing over.

Muscle cells, brain cells, and liver cells are all examples of

• Somatic cells

• Gametes

• Sex cells

• Reproductive cells

How many daughter cells are created during mitosis?

• 1

• 2

• 3

• 4

Which of the following is the purpose of meiosis?

• growth (from zygote to adult)

• maintenance (replacing blood cells)

• repair (after injuries)

• making gametes (egg and sperm cells)

Crossing over occurs during

• Prophase I

• Prophase II

• Metaphase I

• Anaphase II

• Telophase II