Meiosis

In humans, the haploid number of chromosomes is ____.

• 23

• 46

• 70

• 92

Tags

NGSS.HS-LS3-1

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

Tags

NGSS.HS-LS3-2

True or False? Before cells undergo meiosis they pass through interphase first.

• true

• false

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

Tags

NGSS.HS-LS3-2

In Anaphase I, the _________ are separated by the pulling of the spindle fibers to opposite poles of the cell.

• homologous pairs of chromosomes

• sister chromatids

• centromeres

• centrosomes

Tags

NGSS.HS-LS3-2

Check all of the following that DO occur during Telophase I and cytokinesis.

• The separated homologous chromosomes are at opposite poles of the cell.

• The cell divides in two.

• The chromosomes do not uncoil, since they are getting ready for Meiosis II.

• Sister chromatids are pulled away from each other.

Tags

NGSS.HS-LS3-2

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.

Tags

NGSS.HS-LS3-2

In Metaphase II, _________ line up on equatorial plane.

• homologous pairs of chromosomes

• single chromosomes (made up of 2 sister chromatids)

• tetrads

• centrosomes

Tags

NGSS.HS-LS3-2

In Anaphase II, the _________ separate.

• Homologues

• Sister Chromatids

• Tetrads

• Centrioles

Tags

NGSS.HS-LS3-2

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

• 2

• 3

• 4

• 8