2.12 + 2.14 - Inheritance COPY

Question 1

Answer 1

Question 2

Answer 2

Question 3

Answer 3

Question 4

Doctors give dietary supplements and digestive enzymes to children with cystic fibrosis.
Dietary supplements include carbohydrates, proteins and lipids, as well as vitamin and
mineral supplements.
Explain why these children would be given dietary supplements and digestive enzymes.
(5)

Answer 4

Question 5

Answer 5

Question 6

Answer 6

Question 7

Assess the advantages and disadvantages of these types of screening for genetic disorders.

Answer 7

Question 8

Disadvantages of chronic villus sampling

Answer 8

Question 9

What is meant by the term gene ?

Answer 9

A sequence of nucleotides in DNA that codes for a polypeptide.

Question 10

What is meant by a inherited recessive disorder ?

Answer 10

Question 11

Answer 11

CVS :
- Results are avaliable just a few days after the procedure is carried out.

Amniocentesis :
- Results are not available until 2-3 weeks after the sample has been taken.

Question 12

What is meant by the term allele.

Answer 12

Question 13

Answer 13

Question 14

What is genetic screening.

Answer 14

A medical test that can be used to check whether an individual is a carrier of a recessive allele which can causes diseases, or to check for an unborn foetuses for genetic abnormalities.

Question 15

Why would a mother under go prenatal testing.

Answer 15

If she thinks that the baby is at risk of a particular genetic disorder.