Genetic Disorders

Question 1

Cystic Fibrosis is caused by a ________ allele.

Answer 1

Recessive.

Question 2

What is Cystic Fibrosis?

Answer 2

It’s a genetic disorder of the cell membranes. It causes a sticky and thick buildup of mucus in the air passages and in the pancreas.

Question 3

Cystic Fibrosis disorder is caused by a recessive allele, so both parents must be either carriers or _______.

Answer 3

Sufferers

Question 4

Polydactyl is caused by a ________ allele.

Answer 4

Dominant

Question 5

Polydactyl disorder is caused by a dominant allele, what does this mean for the parents?

Answer 5

Only 1 parent has to be suffering for the disorder to potentially show up in the offspring.

Question 6

Before embryos from IVF are implanted into the womb of a woman, they can be screened. How is this done?

Answer 6

A cell of the embryo is removed and its genetic information is screened to check for genetic disorders.

Question 7

How’s embryo screening beneficial?

Answer 7

Embryos with good genes are implanted into a woman’s womb, embryos with dodgy genes are destroyed.

Question 8

Arguments For Genetic Screening. Give 4

Answer 8

• Prevents suffering
• There are strict laws, you can’t customise ya baba’s hair colour or eyes
• During IVF, most embryos are destroyed anyway, this just guarantees the ones that aren’t destroyed are gonna be healthy
• Treating genetic disorders is costly.

Question 9

Arguments Against Genetic Screening. Give 4

Answer 9

• People may wanna customise their babas, this is unethical
• Embryos destroyed, potential human life
• Prejudiced against those with genetic disorders
• Expensive to screen