Meiosis Review

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

The term that refers to a cell that has its full or complete number of chromosomes is

• diploid

• N

• gamete

• haplpoid

This term refers to half the normal chromosome number

• haploid

• 2N

• diploid

• 3N

In humans, the haploid number of chromosomes is ____.

• 23

• 46

• 69

• 92

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

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

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.

In Metaphase II, _________ line up on equatorial plane.

• homologous pairs of chromosomes

• single chromosomes (made up of 2 sister chromatids)

• tetrads

• centrosomes

In Anaphase II, the _________ separate.

• Homologues

• Sister Chromatids

• Tetrads

• Centrioles

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

• 2

• 3

• 4

• 8