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Cell Cycle
Events of mitosis and meiosis
31
Science
7th Grade
10/31/2007

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Term
Mitosis
Definition
splitting of the nucleus
Term
Interphase
Definition

DNA duplicates

Chromosomes invisible 

Term
Cytokinesis
Definition
splitting of the cytoplasm
Term
Metaphase
Definition
double-stranded chromosomes line up in the middle
Term
Telophase
Definition

nucleus starts to reform around each set of chromosomes

chromosomes start to disappear 

Term
Anaphase
Definition
double stranded chromosomes split and move to opposite sides
Term
Prophase
Definition

nucleus begins to disappear

chromosomes appear 

Term
chromosomes
Definition
structures in the nucleus that contain DNA
Term
cell plate
Definition
structure that forms in plant cells during cytokinesis
Term
asexual reproduction
Definition
new organism is produced from one parent
Term
budding
Definition

type of asexual

new organism grows from the body of the parent

Term
gametes
Definition
sex cells

egg & sperm
Term
regeneration
Definition
type of asexual reproduction

ability to regrow a body part
Term
meiosis
Definition

making of sex cells

Term
fertilization
Definition
joining of the sperm and egg
Term
diploid
Definition
having 2 of every chromosome

like a body cell
Term
zygote
Definition
cell that forms from fertilization
Term
haploid
Definition
having only one of every chromosome

like sex cells
Term
sexual reproduction
Definition
new organism produced from two parents
Term
Fertilization
Definition
joining of the egg and sperm
Term
zygote
Definition
cell that is formed from fertilization
Term
DNA
Definition
master copy of an organism's information code
Term
shape of DNA
Definition

double-stranded

spiral (spiral staircase)

Term
structure of DNA
Definition

backbone - sugar and phosphate

steps - bases A, C, G, T

Term

DNA base pairs

Definition

A pairs with T

C pairs with G

Term
RNA
Definition
carries the code for making proteins
Term
shape of RNA
Definition
single stranded
Term
structure of RNA
Definition

backbone - sugar and phosphate

steps - bases A, C, G, U

Term
RNA base pairs
Definition

A pairs with U

C pairs with G

Term
Gene
Definition
section on DNA that directs the making of a protein
Term
Mutation
Definition
any permanent change in a gene or chromosome
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