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 MitosisMeiosis

MitosisMeiosis 1. 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/False Prokaryotes have 1 chromosome which is in the form of a circle.

true

True/False Eukaryotes are more complex than Prokaryotes.

true

True/False True/False The 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 = 78 Rice n = 12.5 Carp n = 52 Dolphin n = 22 DiploidHaploidOrganism DiploidHaploidOrganism DiploidHaploidOrganism

DiploidHaploidOrganism 4422 Dolphin 7839Coyote Carp Not Possible