Lecture 1 and 2 Flashcards
1
Q
Where did the cells used in the making of Dolly come from?
A
The udder of a six year old Finn Dorset sheep
2
Q
Scientists removed the nucleus from a fertilised frog egg and replaced it with one from a frog skin cell. This succeeded in getting tadpole development. What question does this experiment answer?
A
Are cells of an adult organism genetically identical to the fertilised egg from which they came?
3
Q
How were the nuclei from inactive udder cells fused with enucleated egg cells?
A
Electrical impulses
4
Q
When do human clones arise?
A
When a single fertilised egg divides to produce two cells, each one develops into a new individual
5
Q
What are three definitions of a gene?
A
- A unit of inheritance
- A section of DNA that encodes an RNA molecule
- A section of DNA that encodes a protein
6
Q
Which amino acid is incorrect in the protein that causes sickle cell anemia?
A
6
