mitosis and meiosis

Created by kfishh 

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meiosis

the division of cells to create germ cells

homologous

same trait with different information

4 haploid cells

meiosis divides on diploid cell into....

23 chromosomes

how many chromosomes does a gamete have?

2 sets of chromosomes

how many sets of chromosome do zygotes have?

our chromosomes

our traits are determined by our....

exchange DNA strands

crossing over is when chromosomes...

telophase II

what is the very last stage of meiosis?

reduces

meiosis II ____ the # of chromosomes of the parent cell

cytokinesis (meiosis)

the cytoplasm and organelles divide at the end of meiosis I

tetrad

a chromosome with FOUR tetrads

crossing over

allows for each daughter cell to be unique

4 daughter cells with half the # of chromosomes

in meiosis II, the 2 daughter cells are divided into what?

number of chromosomes in the parent cells

the difference between meiosis and mitosis

G1, S, G2

interphase is divided into what three phases?

G1 phase

cell growth occurs

S phase

chromosomes replicate

G2 phase

preparation for mitosis

prophase, metaphase, anaphase, telophase

what are the 4 phases of mitosis?

cell plate

forms midway between the divided nucleus during cytokinesis in plant cells

prophase (mitosis)

the chromatin condenses into chromosomes. the centrioles separate, and a spindle begins to form. the nuclear envelope breaks down.

metaphase (mitosis)

the chromosomes line up across the center of the cell. each chromosome is connected to a spindle fiber at its centromere.

anaphase (mitosis)

the sister chromatids separate into individual chromosomes and are moved apart.

telophase (mitosis)

the chromosomes gather at opposite ends of the cell and loose their distinct shapes. two new nuclear envelopes will form.

cytokinesis (mitosis)

cytoplasm pinches in half and separates new cells

interphase (mitotsis)

cell grows and replicates DNA and centrioles

cancer cells occur when the normal cells loose the ability to control growth and division, normal cells stop growing when they come into contact with other cells

what is the difference between cancer cells and normal cells?

46 chromosomes (23 pair)

how many chromosomes are found in a human body cell

DNA and PROTEIN

what chromosomes are made up of

cell division

divides into 2 daughter cells each daughter cell receives its own copy of the parents cells DNA, chromosomes visible

2N vs. N

the difference between diploid and haploid

cyclin

protein that helps regulate the cell cycle

2

how many cells result from mitosis?

4

how many cells result from meiosis?

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