2.7 - Testing for CF

Question 1

What are the 2 types of embryo screening?

Answer 1

1. chorionic villus sampling
2. amniocentesis

Question 2

What is a false positive?

Answer 2

occurs when a genetic test has wrongly detected a faulty chromosome

Question 3

What is a false negative?

Answer 3

when a genetic test has failed to detect a certain allele or faulty chromosome

Question 4

What does genetic testing do?

Answer 4

looks for genetic genes

Question 5

What does genetic sequencing do?

Answer 5

used to confirm a diagnosis of a genetic disease, identifies carriers & also identifies a genetic disease in embryo/foetus

Question 6

What is the heel prick test?

Answer 6

uses the growth of a strain of bacteria on a specially-prepared agar plate as a sign for presence of high levels of proten trypsinogen found in babies with CF
- a sample of blood is applied to agar plate & growth of bacteria will be a positive indicator for disorders