Cancer, Meiosis, and Gametogenesis

cancer

breakdown in control of cell division that results in tumor formation

one cell

cancer begins as...

non-cancerous and don't travel

benign

cells metastasize

malignant

loss of cell cycle control, heritability, dedifferentiation, loss of contact inhibition, angiogenesis, invasiveness, and metastasis

cancer characteristics

type of cell division that produces gametes

meiosis

interkinesis

meiosis is separate by...

reduces chromosome number from diploid to haploid by separating members of chromosome pairs

meiosis 1

changes chromosome shape from duplicated to unduplicated

meiosis 2

crossing over and independent assortment

What are the two meiotic events that ensure each gamete is genetically unique?

members of chromosome pairs lie side by side and exchange parts of their chromatids during prophase 1

crossing over

random alignment of chromosome pairs at the metaphase plate during metaphase 1

independent assortment

spermatogenesis

gametogenesis (male)

oogenesis

gametogenesis (female)

spermatogonium, primary spermatocytes, secondary spermatocytes, and spermatids

spermatogenesis cell names in order

spermiogenesis

Spermatids mature and turn into sperm in what process?

oogonium, primary oocyte, and secondary oocyte (egg)

oogenesis cell names in order

polar body

name of the cell that dies in oogenesis

turns diploid and is a zygote

If fertilized, the egg does what?