Genetic Manipulation

Question 0

Suggest why it is more difficult to successfully clone animals than plants

Answer 0

Animal embryos must be split into groups of cells and then each group is transplanted into a host ‘mother’. It takes longer for the animals to develop and sometimes there are not enough hosts and embryos may die during development

Question 1

Name a quick, cheap way of cloning plants

Answer 1

Taking cuttings from mature plants

Question 2

Name the two cells needed in adult cell cloning

Answer 2

An adult cell such a skin cell, and am egg cell

Question 3

Give a benefit of adult cell cloning

Answer 3

Development of cloned animals that have been genetically engineered to produce valuable proteins in their milk.
Cloning can save animals from extinction

Question 4

Give a disadvantage of adult cell cloning

Answer 4

Concerns about the ethics of cloning.
Cloning limits the variation in a population (limits the gene pool). This can be a problem for natural selection if the environment changes.
Concerns about using the technique to clone humans in the future

Question 5

What is used to cut genes out of chromosomes?

Answer 5

Enzymes

Question 6

Why do GM crops often give higher yields than traditional crops?

Answer 6

They may not be killed by herbicides, or they may be modified to kill pests that eat them

Question 7

Suggest why farmers grow GM crops.

Answer 7

GM crops give a higher yield, which therefore means more profit for the farmer.

Question 8

Give some advantages of genetic technology

Answer 8

See book

Question 9

Give some disadvantages of genetic technology

Answer 9

See book

Question 10

Why do farmers have to buy new GM seed every year?

Answer 10

Because GM crops are infertile.