Meiosis

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

Which part of MEIOSIS is identical to MITOSIS?

• Meiosis I

• Meiosis II

True or False. In Meiosis II, there are TWO cells that go through each phase at the same time.

• true

• false

Which of the following does NOT happen during Telophase II?

• the nuclei reform

• each cell begins to split evenly in two

• the chromosomes duplicate

• the nuclei contain a haploid number of chromosomes

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

• 2

• 3

• 4

• 8

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 Prophase II, the_________ reforms and the spindle fibers attach to each chromosome.

• mitotic spindle

• centrosomes

• nucleus

• cell plate

What is the name of the Belgium scientist who first discovered meiosis in 1883?

• Edouard van Beneden

• Gregor Mendel

• Aristotle

• Rosalind Franklin

In humans, the haploid number of chromosomes is ____.

• 23

• 46

• 69

• 92