Meiosis

Meiosis

by Adam Lykens

Multiple Choice

Two chromosomes that are paired together (one comes from mom and one from dad) as a set are called what?

• centromeres

• sister chromatids

• homologous chromosomes

• daughter cells

Multiple Choice

Body cells (somatic cells) are __________, meaning they have both sets of homologous chromosomes in them.

• haploid

• diploid

• triploid

• tetraploid

Multiple Choice

Where do you get each of your homologous chromosomes from?

• You get both from your biological mother

• You get both from your biological father

• Your cells make them on their own

• You get 1 from your biological mother and 1 from your biological father

Multiple Choice

Sex cells (gametes like sperm and eggs) are _________, meaning the only have 1 copy of each chromosome.

• haploid

• diploid

• triploid

• tetraploid

Fill in the Blanks

Multiple Choice

During which phase are the chromosomes replicated?

• interphase

• Prophase I

• Prophase II

• Telophase

Multiple Choice

During which phase do homologous chromosomes pair up, forming a tetrad?

• Interphase

• Prophase I

• Metaphase I

• Telophase II

Multiple Choice

During which phase does crossing over-the swapping of genetic information from 1 homologous chromosome with another-occur?

• Interphase

• Prophase I

• G1 phase

• Prophase II

Multiple Choice

During which phase do homologous chromosome pairs (tetrads) line up down the middle of the cell?

• Interphase

• Prophase I

• Metaphase I

• Anaphase I

Multiple Choice

During which phase are the homologous chromosome pairs pulled to opposite poles of the cell by the spindle fibers?

• Interphase

• Prophase I

• Metaphase I

• Anaphase I

Match

Match the following phases of meiosis I with its description:

• Interphase

• Prophase I

• Metaphase I

• Anaphase I

Homologous chromosomes are replicated

Homologous chromosome pairs pair up with each other, and crossing-over occurs

Homologous chromosome pairs line up down the middle of the cell

Homologous chromosome pairs are moved toward opposite poles by the spindle fibers

• Homologous chromosomes are replicated

• Homologous chromosome pairs pair up with each other, and crossing-over occurs

• Homologous chromosome pairs line up down the middle of the cell

• Homologous chromosome pairs are moved toward opposite poles by the spindle fibers

Multiple Choice

At the end of meiosis I, the 2 daughter cells are ___________.

• haploid

• diploid

• triploid

• tetraploid

Multiple Choice

After meiosis I, and before meiosis II, the chromosomes are replicated.

• True

• False

Multiple Choice

During _________, chromosomes consisting of 2 sister chromatids become visible and the nuclear membrane starts to disappear.

• Prophase II

• Metaphase II

• Anaphase II

• Telophase II

Multiple Choice

During __________, the chromosomes line up down the middle of the cell.

• Prophase II

• Metaphase II

• Anaphase II

• Telophase II

Multiple Choice

During __________, the chromatids are separated and are moved toward opposite poles by the spindle fibers.

• Prophase II

• Metaphase II

• Anaphase II

• Telophase II

Multiple Choice

During __________, the nuclear membrane reappears around the 4 sets of chromosomes.

• Prophase II

• Metaphase II

• Anaphase II

• Telophase II

Multiple Choice

What is the result after cytokinesis at the end of meiosis II?

• 4 daughter cells that are genetically identical to the parent cell

• 2 daughter cells that are genetically identical to the parent cell

• 4 diploid daughter cells that are genetically different from each other

• 4 haploid daughter cells that are genetically different from each other

Match

Match the following phases of meiosis with the correct event:

• Prophase I

• Metaphase II

• Prophase II

• Anaphase I

• Telophase II/Cytokinesis II

Crossing-over

Chromosomes consisting of 2 chromatids line up in the middle of the cell

The nuclear membrane starts to disappear and the chromosomes become visible

Homologous chromosome pairs move toward opposite poles

4 haploid daughter cells that are genetically different

• Crossing-over

• Chromosomes consisting of 2 chromatids line up in the middle of the cell

• The nuclear membrane starts to disappear and the chromosomes become visible

• Homologous chromosome pairs move toward opposite poles

• 4 haploid daughter cells that are genetically different

Multiple Choice

What are gametes?

• body cells

• somatic cells

• sex cells

• skin cells

Multiple Choice

What is the first diploid cell called, once fertilization has occurred?

• daughter cell

• blastocyst

• zygote

• parent cell

Match

Match the following:

• sperm

• egg

• zygote

• gamete

• meiosis

male gamete

female gamete

diploid

haploid

formation of gametes

• male gamete

• female gamete

• diploid

• haploid

• formation of gametes