Cloning and Cell ageing

Question 1

What is cloning?
-sexual or asexual reproduction?

How to clone
-remove the _____ from what? by inserting a _______ into the cytoplasm
-what stage should the cell be in for development, and where should it be sent?
-the egg with the transplanted nucleus will begin to _____ and grow
-is it possible to grow into adult if done with a gastrula?

Answer 1

process in which identical offspring are formed from a single cell/tissue
-asexual

-nucleus from a unfertalized egg, inserting a micropipette
-blastula (cells from inner cell mass) so that it can be sent to the enucleated cell
-divide
-no

Question 2

Totipotent
-what does it describe
-are adult mammal cells totipotent? When must cells be taken so that their nuclei are totipotent?

Identical twins: how many egg cells?
Fraternal twins: how many egg cells?

Answer 2

-a nucleus that is able to bring a cell from egg to adult
-no
-before the 8 cell stage

1
2

Question 3

What 2 cells escape the cell aging (biological clock), and what do they become?

-3 theories for cell aging/death

-cancer is the ____________ of cells
-what is metastasis
-do they change shape and differentiate? Are they efficient?

Answer 3

-spermocytes become sperm and divide no more, cancer cells divide too fast

1. mutations
2. genes shut down chemical rxns
3. when they no longer divide/ lineages die

-rapid uncontrolled growth
-when cancer cells move
-no, no, no