Review Notebook: Unit 5 CED Quizizz (MCQ only)

How many rounds of division in meiosis?

• 0

• 1

• 2

• 3

Answer explanation

The function of meiosis is to create FOUR HAPLOID daughter cells. In order to make FOUR cells, the parent cell must divide two times. The first division makes two cells, then the second division makes four cells.

How many rounds of DNA replication?

• 0

• 1

• 2

• 3

Answer explanation

The function of meiosis is to create FOUR HAPLOID daughter cells. In order to make HAPLOID cells, the parent cell must replication ONCE but divide TWICE. The first division makes two HAPLOID (with two chromatid) cells, then the second division makes four HAPLOID (with one chromatid) cells.

What phase does the crossing over take place?

• Prophase I

• Prophase II

• Metaphase I

• Metaphase II

Answer explanation

Crossing over is the process where non-sister chromatids exchange genetic information. This takes place during prophase I. The chromatin condenses forming a tetrad (homologous chromosomes with two sister chromatids each). The nonsister chromatids will align and exchange genetic information.

Tags

NGSS.HS-LS3-2

What phase does independent assortment take place?

• Prophase I

• Prophase II

• Metaphase I

• Metaphase II

Answer explanation

Independent assortment occurs when the homologous chromosomes align on the metaphase plate. This takes place during metaphase I. Recall the first round of division involves homologous chromosomes while the second round involves sister chromatids.

If parent cell is 2N, what is the ploidy of the daughter cell?

• 0N

• 1N

• 2N

• 3N

Answer explanation

In meiosis, the parent cell is diploid (2N) and the daughter cell is haploid (1N). This is because the cell replicates its DNA ONCE but divides TWICE.

Tags

NGSS.HS-LS1-4

At the end of which round of meiosis is the cell haploid?

• Meiosis I

• Meiosis II

Answer explanation

The homologous chromsomes (one set from each parent) are separated during meiosis I. This leaves one SET of chromosomes in the daughter cells which is a HAPLOID cell.

When does DNA replication occur for meiosis?

• Before meiosis during interphase

• During prophase when the cell is preparing

• During metaphase when chromosomes are in the middle

• During telophase when the nuclear envelope is forming

Answer explanation

DNA replication takes place during the S phase of interphase. This process takes place prior to the nuclear division involved with meiosis.

What phase of interphase does DNA replication occur?

• G₁

• G₂

• S

• It doesn’t occur in interphase

Answer explanation

Interphase is the cell preparing to divide by growing and replicating the chromosomes. The DNA replication takes place during the S phase, similar to mitosis.

Compare and contrast number of DNA replications between mitosis & meiosis

• Mitosis – 0, Meiosis – 1

• Mitosis – 1, Meiosis – 1

• Mitosis – 1, Meiosis – 2

• Mitosis – 1, Meiosis – 0

Answer explanation

Both mitosis and meiosis will replicate the DNA once.

The difference results from the number of divisions after that single round of replication.

Compare and contrast number of divisions between mitosis & meiosis

• Mitosis – 0, Meiosis – 1

• Mitosis – 1, Meiosis – 1

• Mitosis – 1, Meiosis – 2

• Mitosis – 1, Meiosis – 0

Answer explanation

The resulting cells of mitosis are TWO DIPLOID daughter cells, while the resulting cells of meiosis are FOUR HAPLOID daughter cells. This results because mitosis divides ONCE while meiosis divides TWICE.