Meiosis

35 terms by caroline13 

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totipotent

type of cell found in the fertalized egg

pluripotent

embryonic stem cells are

multipotent

adult stem cells are

metastasize

the process of cancer spreading

to make sex cells

ultimate purpose of meiosis

2

amount of divisions in meiosis

oncogenes

mutations in these cause problems controlling the cell cycle

ploidy

the number of chromosomes in an organism

diploid

an organism that has 2 copies of each chromosome

2n

diploid symbol

haploid

an organism that has 1 copy of each chromosome

prophase 1

phase of meiosis that leads to genetic diversity

synapses

the process of tetrads crossing over

chiasmata

the physical point of crossing over

anaphase 2

phase of meiosis where sister chromosomes seperate

spermatogenesis

process of creating sperm

4 sperm

created in spermatogenesis

oogenesis

process of creating eggs

1 egg and 3 polar bodies

created in oogenesis

cell grows

G1

cell copies DNA/organelles

Synthesis

cell continues to grow

G2

nuclear membrane breaks down, spindle apparatus forms, chromatin coils into chromosomes, homologous chromosomes find each other and form tetrads, synapses occurs

prophase 1

homologous pairs of chromosomes line up at the equator

metaphase 1

homologous pairs of chromosomes seperate and move to opposite poles (2n-n)

anaphase 1

nuclear envelope reforms, spindle apparatus breaks down, chromosomes uncoil back into chromatin

telophase 1/cytokinesis

cell grows

interkinesis

nuclear membrane breaks down, spindle apparatus reforms, chromatin coils back into chromosomes

prophase 2

chromosomes line up at the equator

metaphase 2

sister chromosomes seperate into chromosomes

anaphase 2

four genetically different haploid pairs are formed

telophase 2/cytokinesis

nuclear membrane breaks down, spindle apparatus forms, chromatin coils into chromosomes

prophase

chromosomes line up at the equator

metaphase

chromosomes head to opposite poles, sister chromatids seperate

anaphase

two nuclei are formed, nuclear envelope reforms, spindle apparatus breaks down, chromosomes uncoil into chromatin

telophase

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