15.3

Question 1

What is the second step of cloning?

Answer 1

The egg cell is fused with a donor cell that contains a. nucleus taken from an adult. The resulting diploid egg develops into an embryo which is then implanted into a foster mother where it develops until birth

Question 2

What do genetically modified plants and animals lead to?

Answer 2

Better less expensive and more nutritious food as well as less harmful manufacturing processes. Includes resistance to herbicides

Question 3

What are GM crops?

Answer 3

Genetically modified plants, uses genes that produce a protein known as BT toxin. It is harmless to humans and most animals, but enzymes in the digestive systems of insects convert BT to a form that kills them.plants with BT genes do not have to be sprayed with pesticides. They produce higher yields of crops

Question 4

What is gene therapy?

Answer 4

The process of changing a gene to treat a medical disease of disorder.

Question 5

First step of gene therapy

Answer 5

Identify the faulty gene

Question 6

Second step of gene therapy

Answer 6

Use restriction enzymes to cut out all the normal gene from DNA.

Question 7

Third step of gene therapy

Answer 7

Splice the normal gene into viral DNA

Question 8

Fourth step of gene therapy

Answer 8

Allow recombinant viruses to infect human cells

Question 9

What is DNA fingerprinting?

Answer 9

Used to identify individuals by analyzing sections of DNA

Question 10

Steps in DNA fingerprinting

Answer 10

First,restriction enzymes cut a small sample of human DNA into fragments.
Then a DNA prone (dye) detects the fragments that have highly variable regions, revealing a series of variously sized DNA bands.
DNA samples can be obtained from blood,sperm or tissue. Even a hair strand if it has tissue at the root

Question 11

What is the first step of cloning?

Answer 11

The nucleus of an un fertilized egg cell is removed