What are the two main phases of the cell cycle? Interphase & Mitotic Phase

Identify the structure: Centromere

Division of the cytoplasm What is cytokinesis? Division of the cytoplasm

What do spindle fibers do? Help to separate chromosomes

What are the three phases of interphase? G1, S Phase, G2

Name the phase: Metaphase

What happens during G1 Phase? The cell grows

Name the phase & describe. M Phase—cell division

During which phase is the DNA replicated? S Phase

Name the phase: Anaphase

What are the two parts of M Phase? Mitosis & Cytokinesis

Identify the structure: Centrioles

What specifically IS mitosis? Division of the nucleus

Name the phase & describe. G1—the cell grows

What are the four phases of mitosis…IN ORDER? Prophase-Metaphase- -Anaphase-Telophase

Name the phase: Telophase

What are the functions of mitosis? (i.e.—why does it take place?) Growth, repair, replace

Name the phase: Metaphase I

A difference between cell division in animal and plant cells is that plant cells have what? A cell plate

Name the phase: Prophase

2 Identical cells that are 2N The process of cell division begins with a cell that is 2N…what do you have at the end? 2 Identical cells that are 2N

Name the phase: Anaphase II

Identify the structure: Sister chromatid

Chromosome number is represented by what symbol?

What is the arrow pointing to? Cleavage furrow

Name the phase: Cytokinesis II

What is a gamete? A sex cell

What does this picture show? Crossing over

What is the division of gametes? Meiosis

Name the structure: Tetrad

Term to describe a cell that contains both sets of homologous chromosomes Diploid

How many cells are there at the end of meiosis? 4

How many chromosomes are there in a human cell? 46

How many chromosomes are there in a human sperm or egg? 23

Name the phase: Anaphase I

At the end of meiosis are the cells haploid or diploid?

If an organism’s diploid number is 12, what is its haploid number? 6

What gamete is produced by males? How many are produced during meiosis? Sperm, 4

If an organism’s haploid number is 12, what is its diploid number? 24

Egg, 1 (the other 3 are polar bodies) What gamete is produced by females? How many are produced during meiosis? Egg, 1 (the other 3 are polar bodies)

Why is meiosis called a reduction division? The number of chromosomes is cut in half (diploid haploid).

Explain the difference between cell division and mitosis. Mitosis: splitting of nucleus Cell division: splitting of cell

What is the exchange of genetic material between homologous chromosomes? Crossing-over

Name the phase & describe. S Phase—DNA replicates

Name the phase & describe. G2—the cell prepares for mitosis