1. You’ll see credit for completing this quiz in “Unit 5 Cumulative Assessment.”
  2. This same quiz can be completed for the same credit on the Biomania AP Bio App. Click here to download Biomania (free for students enrolled in a course with a teacher using Learn-Biology.com).

[qwiz random=”true” style=”width: 600px !important;” quiz_timer=”true” dataset=”Meiosis Click-on dataset” qrecord_id=”sciencemusicvideosMeister1961-Unit 5 Meiosis Click On Challenge” dataset_intro=”false” spaced_repetition=”false”]

[h] Meiosis Click-on Challenge

[i] Note the timer in the top right. Your goal is accuracy and speed. A good strategy: once through slowly, then additional trials for improvement.


[q json=”true” xx=”2″ hotspot_user_interaction=”label_prompt” dataset_id=”Meiosis Click-on dataset|b91ef48989ac7″ question_number=”1″ show_hotspots=”” unit=”5.Heredity” topic=”5.1-2.Meiosis_and_Genetic_Diversity”] TOPIC: Phases of Meiosis

Random alignment of homologous pairs during this phase is the basis of independent assortment.

Awesome! Diagram 3 is the basis of independent assortment.

HINT: You’re looking for metaphase 1, when homologous pairs are lined up in the middle of the cell.
Crossing over is happening, leading to recombinant chromosomes.

Good work! Crossing over happens during prophase 1

HINT: You’re looking for prophase 1. Find the phase when homologous pairs are paired up (but not aligned at the center of the cell)
DNA replication/ Chromosome Duplication

Yes! “1” is interphase 1, which is when DNA replication happens.

HINT: It happens during interphase 1, right at the start of meiosis.
Homologous pairs are pulled apart

Way to go! Homologous pairs are pulled apart during anaphase 1, represented by “4.”

HINT:  Homologous pairs are pulled apart during anaphase 1. This only happens after homologous pairs are pulled to the middle of the cell. 
Two haploid nuclei form, and the first cytokinesis starts

Very nice! Two haploid nuclei form in telophase 1, shown at “5.”

HINT: You’re looking for telophase 1. Look for two nuclei inside one daughter cell.
Doubled chromosomes condense in a haploid cell (after cytokinesis 1)



Thumbs up! Doubled chromosomes condense in prophase 2, which is diagram 8.

HINT: Look for two similar daughter cells. Each daughter cell is haploid, with half the number of chromosomes that the cell had during Meiosis I.
Doubled chromosomes condense in haploid daughter cells.

Terrific. Doubled chromosomes in haploid cells condense during prophase 2.

HINT: You’re looking for prophase 2. Find daughter cells with half the chromosomes as the cell had in meiosis 1.
Doubled chromosomes consisting of two sister chromatids are aligned in the middle of the cells.

Superb! That’s what happens during metaphase 2.

HINT: You’re looking for metaphase 2, which i during meiosis II. Where are doubled chromosomes in the middle of the cell?
Sister chromatids are being pulled apart.

Outstanding! That’s what happens during anaphase 2.

HINT: You’re looking for anaphase two which is in meiosis II.
New haploid nuclei are forming around single chromosomes.

Outstanding! You’ve identified what happens during telophase 2.

HINT: Look for two daughter cells, each with two nuclei.
Haploid cells with single chromosomes

Nice! The cells at “13” as haploid cell with single chromosomes.

HINT: Find cells that have a pair of single (as opposed to doubled) chromosomes. 
DNA replication. Single chromosomes become sister chromatids.

Yes! “1” is interphase 1, which is when DNA replication occurs.

HINT: Meiosis begins just like mitosis, with DNA replication. That would have to be happening where?

[q json=”true” hotspot_user_interaction=”label_prompt” dataset_id=”Meiosis Click-on dataset|b8eb01403a6c7″ question_number=”2″ show_hotspots=”” unit=”5.Heredity” topic=”5.1-2.Meiosis_and_Genetic_Diversity”] TOPIC: The life cycle of a sexually reproducing species.

Process that creates haploid gametes.

Nice! “3” represents meiosis. 

HINT: Meiosis is the process by which haploid gametes (sperm and egg cells) are made. These cells are shown at 4a and 4b. 
Haploid female gamete

Good work. “4a” represents the haploid ovum, or female gamete.

HINT: Trace the line from the mother (at 1a) up to the sex cell that she creates. 
Haploid male gamete

Exactly: The sperm cell at “4b” is the haploid male gamete.

HINT: Find the father, and trace the line up to the sperm cell he creates.
Restores chromosome number from haploid to diploid.

Excellent. Fertilization (at 5) restores the diploid chromosome number.

HINT: You’re looking for fertilization, the process through which sperm and egg cells combine to create a fertilized egg.
Diploid zygote

Awesome. “6” is the diploid zygote.

HINT:  Fertilization leads to a diploid zygote. That zygote develops into an adult.
Mitosis and development

Yes! “7” represents mitosis and development.

HINT: Find the processes by which a fertilized egg becomes an adult.
Organ that creates male gametes.

Way to go. The testes (2b) create the male gamete.

HINT: These are the structures in a male that create sperm.
Organ that creates female gametes.

Very nice. The ovaries (2a) create the female gamete.

HINT: Find a structure between the mother and the egg cell.

[q json=”true” xx=”2″ hotspot_user_interaction=”label_prompt” dataset_id=”Meiosis Click-on dataset|b8b6e8b62cec7″ question_number=”3″ show_hotspots=”” unit=”5.Heredity” topic=”5.1-2.Meiosis_and_Genetic_Diversity”] TOPIC: Meiosis: The Big Picture

Arrow(s) representing DNA replication

Yes! “1” represents DNA replication.

HINT: Find where single chromosomes change into doubled chromosomes, consisting of two sister chromatids.
Arrow(s) representing separation of homologous pairs.

Way to go! “2” represents meiosis I, which separates homologous chromosomes.

HINT: Homologous pairs are separated during the first cell division (Meiosis I).
Arrow(s) representing separation of sister chromatids.

Very nice. “3” represents meiosis II, which separates sister chromatids.

HINT: The doubled chromosomes made of two connected sister chromatids look like an “X.” Find cells at the end of meiosis without these doubled chromosomes, and work back from there.
Diploid cell(s) with doubled chromosomes.

Terrific: The cell between “1” and “2” is diploid, with doubled chromosomes. 

HINT: The cells are diploid when each chromosome has a homologous  partner. That’s before the first cell division. 
Haploid cells with doubled chromosomes

Superb! The cells between “2” and “3” are haploid, but with doubled chromosomes. 

HINT: Count the number of chromosomes in the germ cell on the far left. Now, follow the arrows and find the first cell in which the chromosome number is half of that.
Haploid cells with single chromosomes, ready to be gametes

Outstanding! After meiosis II (at “3”) the cells are haploid, with single chromosomes.

HINT: Look for these cells after the second cell division.

[q json=”true” hotspot_user_interaction=”label_prompt” dataset_id=”Meiosis Click-on dataset|a6268b6801a5c” question_number=”4″ show_hotspots=”” unit=”5.Heredity” topic=”5.1-2.Meiosis_and_Genetic_Diversity”] TOPIC: Comparison of Meiosis and Mitosis

Parent cell in mitosis

Awesome! That’s the parent cell.

HINT: In mitosis, the daughter cells have the same chromosome number as the parent cell.
Diploid daughter cells that result from mitosis


HINT: In mitosis, the daughter cells have the same number of chromosomes as the parent cell.
Germ cell for meiosis.

Great job!

HINT: Look for a diploid cell with single (non-doubled) chromosomes that starts meiosis. Remember the meiosis has two cell divisions.
Haploid daughter cells with doubled chromosomes.

Good work

HINT: Look for cells that result from the first meiotic cell division.
Haploid daughter cells with single chromosomes, ready to become gametes.


HINT: You’re looking for the cells that result from the second meiotic division.
Meiotic cell immediately after DNA replication


HINT: Meiosis has two cell divisions, and it starts with DNA replication. The replicated DNA is in doubled chromosomes, which look like an “X.”

[q json=”true” hotspot_user_interaction=”label_prompt” dataset_id=”Meiosis Click-on dataset|dab071786efff” question_number=”5″ show_hotspots=”” unit=”5.Heredity” topic=”5.6.Chromosomal_Inheritance”] TOPIC: Chromosomal sex determination in humans

Male germ cell

Yes. The male germ cell is at “1.”

HINT: Human male germ cells have 44 autosomes and an X and Y chromosome. 
Female germ cell

Way to go!

HINT: The human female germ cell has 44 autosomes and two X chromosomes.
A gamete from the mother that will produce a female offspring.

Thumbs up!

HINT: Look for haploid egg cell that comes from the female germ cell. This egg cell will have 22 autosomes and an X chromosome.
A gamete that will produce male offspring


HINT: A human male producing gamete will have 22 autosomes and a Y chromosome.
A sperm cell that will produce female offspring


HINT: Look for a haploid cell from the father  that has 22 autosomes and an X chromosome. 
A female zygote

Nice going!

HINT: Look for a cell that results from the fusion of a sperm and an egg cell. That fertilized egg cell (a zygote) will have 44 autosomes and two X chromosomes.
A male zygote

Nice job!

HINT: Look for a cell that results from the fusion of a sperm and an egg cell. That fertilized egg cell (a zygote) will have 44 autosomes, one X chromosome, and one Y chromosome.