QUIZ Week 4 REVIEW (1/31/25) MEIOSIS

Which of the following is the best definition for MEIOSIS?

• the process of two haploid cells uniting

• the counting of chromosomes within a diploid cell

• a two-step process that reduces the number of chromosomes in half such that there is only one copy of all the chromosomes

• the equational division of a cell into two identical copies

True or False? Before cells undergo meiosis they must replicate their DNA during S-phase of Interphase

• true

• false

Tags

NGSS.HS-LS3-2

What are Homologous Chromosomes?

• Chromosomes pairs - you get one from mom and the other from dad

• A cell that has one set of chromosomes

• Each side of a replicated chromosome

• They are the same as sister chromatids

In which stage of MEIOSIS does crossing over occur? (The exchange of genetic material between chromosomes in a tetrad.)

• Anaphase I

• Metaphase I

• Prophase I

• Telophase I

The purpose of Meiosis I is to separate _________ by the pulling of the spindle fibers to opposite poles of the cell.

• homologous pairs of chromosomes

• sister chromatids

• centromeres

• centrosomes

The purpose of Meiosis II is to separate _________ by the pulling of the spindle fibers to opposite poles of the cell.

• homologous pairs of chromosomes

• sister chromatids

• centromeres

• centrosomes

At the start of Meiosis II, which of the following is NOT true?

• There are two cells.

• The cells are haploid.

• The chromosomes are paired up as homologues.

• DNA is present as two sister chromatids joined at the centromere.

How many cells are formed at the end of Meiosis II?

• 2

• 3

• 4

• 8

The products of MEIOSIS have _______ number of chromosomes.

• haploid

• diploid

Which of the following are CORRECT observations about the differences between MITOSIS and MEIOSIS? (Check all that apply.)

• Mitosis produces cells that identical to the parent cell.

• Meiosis produces cells that have half the number of chromosomes as the parent cell.

• All cells go through INTERPHASE as part of the cell cycle, whether it goes to mitosis or meiosis next.

• In both types of cell division, the chromosomes are only duplicated once.

• Only in Mitosis, do you see chromosomes pair up to form a tetrad.

Tags

NGSS.HS-LS1-4