Genetic Screening And Disorders

Question 1

What is genetic screening used for ?

Answer 1

Parent identification 
Disease screening 
Genotype profiling 
Breed identification 
Breeding coefficients

Question 2

What samples can genetic testing be carried out on ?

Answer 2

Genetic testing can be carried out on blood, skin and amniotic fluid or fur.

Question 3

What is severe combined immunodeficiency ?

Answer 3

A condition which occurs in humans, dogs, mice and Arabian horses. It is an autosomal recessive disease (both parents must pass on a copy of the recessive gene for offspring to have the disease).

The animal has a malfunctioning immune system leading to death within a few months.

Question 4

What is Von Willebrand Disease ?

Answer 4

An autosomal recessive blood clotting disorder that can occur in humans and dogs. It leads to difficulty controlling bleeding after injury.

Question 5

What is Freemartinism ?

Answer 5

A condition which occurs in cattle where a male and female twin develop simultaneously. The foetuses share the placenta where hormones from both mix. The female may be infertile and show characteristics of a male reproductive system and have cells with XY chromosomes.