DNA & Cloning Flashcards
1
Q
3 main functions of nucleus
A
- what type of cell it will evolve into
- what function it will preform
- how long it will live
2
Q
What are chromosomes
A
contains cell instructions
thread like structure made of DNA
3
Q
How many chromosomes in a cell
A
46 chromosones
23 from mothers egg
23 from fathers sperm
2 of which are sex chromosones
4
Q
4 genes in DNA molecule
A
- ADENIN
- GUANINE
- THYMINE
- CYTOSINE
5
Q
The role of DNA
A
controls the manufacturing of protein which determines what function teh cell will have
6
Q
What is cloning?
A
geneticly identical copy of an organism
- when all the dna is the same
7
Q
why is cloning good?
A
- can be used to create copy of organs to help
- used to make copies of plants, fruits, vegetables
8
Q
Cell mutation?
A
change in the order of the genes ACTG blocks.
- caused by mutagens (UV & X-ray, Chemicals)
- not all mutations are dangerous (albino - no colour in skin)
