Mitosis ( cutting of the cell/dividing of the cell) and cytokinesies (the cell)
S phase is ...
G1, G2- "G"
S and G phases are _____.
How many chromosomes does A healthy human have?
What happens during mitosis interphase ...
Its the stage between divisions. Cell growth and duplication of chromosomes.
What happens during mitosis prophase...
Spindle fibers begin to form. Nuclear membrane begins to disolve.
What happens during mitosis metaphase
The chromsomes line up in the middle of the cell. And they are attaches to the spindle fibers.
What happens during mitosis anaphase
Chromsomes move to opposite poles (divide) into 22 on one side and 23 on the other
What happens during mitosis telophase
The chromsomes reach opposite poles. Spindle fibers have desolved and fibally the nuclear membrane begins to reform. ( the cell starts to divide in two)
Why is cancer so unique
They are mutated cells that can't age and the continue to multiple. They are ur bodys cells so you cant fight it. Also when taken out of the body thtey can still keep dividing
Some causes for cancer
Certain fried foods
To create blood vessels
A cell that doeant have any function. It has yet to become somthing
Types of clonning
Reproductive cloning- duplicating a person
Therapeutic cloning- duplicating part of a person
Is a clone gentically identical?
Almost, they are different when grown up in different inviroments
How is clonning done
Clone are produces naturally when the cell in a developing zygote become seperated aftee the two cell stage
Artificail embryo twinning
And early embryo is sepertated into individual cells in a petri dish in a lab. Each cell then divides and develops on its own. And then implanted into the surrogate mom
Somatic cell transfer
DNA from a somatic cell of an adult is infected into an unfertilized, Enucleated egg and then implanted into the uteeus of a surrogate mother
They use stem cells to grow diff types of cells
Embryonic vs. Adult stem cells
Embryonic can be anything while adult ones are limited. Embryonic stem cells can be grown easily when aduly ones dont mature aswell. But adult cells are less likely to be rejected after transplantation
Whwn does crossing ovee happen?
Qhat is a nondisjunction
When homologous chromoaomes fail to seperate during meiosis
Having three copies of a chromsome. Ex, down syndrome
Having only one copy of a chromsome. Ex, turners symdrome ( females usually dont develop sexually)
How many haploid cells do we have
Anothee word for crossing over
When the two pairs of chromosomes meet up! And then start croaaing over
All your chromosomes ( not sex cells)
4 haploid cells arw priduces during what?
Crossing over only happens during what stage?
Name two ways that meiosis promotes varation when mitosis does not?
Name three ways to identify homologous paira in a karyotype