Lord of the Cell Rings and the

Division of Middle Cell

Journey 1 : Fellowship of the Cell

Ring

What is the longest phase of the cell cycle?

Interphase

What is #1?

G1

What is #2?

s

What is #3?

G2

What is #4?

Mitosis

What is #5?

Prophase

What is #6?

Metaphase

What is #7?

Anaphase

What is #8?

Telophase

What is #9?

Interphase

What happens in #1?

Growth and performs normal metabolic activities

What happens in #2?

DNA is Replicated

What happens in #3?

Growth and prepares for mitosis

Journey 2:The Two Towers:

Mitosis and Meiosis

Meiosis occurs in what type of

organs?

• Reproductive organs

What other cells besides the egg cell

are made during female meiosis?

• Polar Bodies

Bacteria divide by what

process/processes?

• Binary Fission and Mitosis

What is unequally divided between the

new cells of the female meiosis?

• Cytoplasm

What guides chromatids in the moving process?

• Spindle Fibers

What is the longest phase of

mitosis?

• Prophase

In meiosis, animals make _______ and

plants make _______

• Animals = gametes • Plants = spores

Genetic recombination is the formation of

new combinations of _____________

• DNA / Chromosomes

The production of sperm is called __________________ and the production of eggs

is called _________________

• Spermatogenesis• Oogenesis

Body cells are called ___________________ cells. These cells undergo the cellular division called __________________. Sex

cells are called _________________. These cells are produced by the

cellular division called ___________________.

• Somatic• Mitosis• Gametes• Meiosis

What two unique events occur in

meiosis and explain them?

• Crossing Over – Chromosomes pair up and arm segments get tangled and break from original chromosome. The arms then bond with the other chromosome.

• Skipping Replication – Only 1 DNA replication but 2 divisions. Chromosomes half in number as a result.

What are 3 things that happen in

prophase?

Prophase

• Nuclear envelop dissolves• Nucleolus dissolves• Chromosomes condense• Centrioles move to the poles• Spindle fibers develop from the centrioles

Draw the difference between meiosis of

the sperm and meiosis of the egg.

List the differences between the Two Divisions

Mitosis Meiosis

1. 1.

2. 2.

3. 3.

4.

4.

Mitosis Meiosis1. Goes through PMAT once 1. Goes through PMAT

Twice

2. Ends with 2 Diploid cells identical to parent

2. Ends with 4 Haploid cells different from the parent

3. Somatic cells undergo this process

3. Gametes are produced by this process

4. No crossing over or skipping of replication

4. Crossing over and skipping replication occurs

Is Meiosis a part of the cell cycle? Yes or No

Explain why meiosis is or is not a part of a cycle in detail. (Must

include what happens to the cells)

• No, because meiosis ends with 4 haploid gametes that will either fertilize or DIE

Identify the Phase

• Telophase

Identify the Phase

• Prophase

Identify the Phase

• Anaphase

Identify the Phase

• Metaphase

Identify the Phase

• Anaphase

Identify the Phase

• Prophase

Identify the Phase

• Interphase

Identify the Phase

• Metaphase

Journey 3: The Return of the DNA King

True/FalseProkaryotes have 1 chromosome which is in the form of a circle.

• true

True/FalseEukaryotes are more complex than Prokaryotes.

• true

True/FalseThe haploid number of chromosomes must be even, but the diploid number can be odd or even.

• False: The diploid number must be even where the haploid can be even or odd

A long, thin molecule that stores genetic

information?

• Chromosomes - DNA

Two copies of the same chromosomes are

called?

• Homologues or Homologous Chromosomes

Humans have 46 chromosomes in all cells

except sperm and egg cells. How many of these

chromosomes are autosomes?

• 44

Between cell divisions, the DNA in a eukaryotic

cell is uncoiled and spread out; in this form

it is called...

• Chromatin

The constricted area of a homologue connecting

the 2 chromatids is called a

• Centromere

At the end of every side of a homologue there is a similar DNA sequence

that is called the

• Telomere

A protein that DNA wraps tightly around which gives a chromosome its shape.

• Histone

A visual representation of the organized form of the

chromosomes in an organism.

• Karyotype

What are the 2 types of chromosomes?

• Sex Chromosomes and Autosomes

What is the Gender of a person with this

karyotype?

• Female

Coyote 2n = 78Rice n = 12.5Carp n = 52

Dolphin n = 22

Diploid Haploid Organism44 39

104 25

Diploid Haploid Organism44 39

104 25

Diploid Haploid Organism44 39

104 25

Diploid Haploid Organism44 22 Dolphin 78 39 Coyote 104 52 Carp 25 12.5 Not Possible