You Need to Understand Family Pedigrees Flashcards
1
Q
Why does knowing how inheritance works help you?
A
Helps you to interpret a family pedigree
2
Q
What is cystic fibrosis?
A
A genetic disorder of the cell membrane
3
Q
What kind of allele is the allele that causes cystic fibrosis?
A
A recessive allele, ‘f’, carried by about 1 person in 30
4
Q
Why won’t people with only one copy of the allele won’t have the disorder?
A
Because its recessive
5
Q
What are people with only one copy of the allele called?
A
Carriers
6
Q
What must have to happen for a child to have the chance of inheriting the disorder?
A
Both parents must be either carriers of sufferers
7
Q
What are the changes if both parents are carries or a child having the disorder?
A
A 1 in 4 chance
8
Q
Look at page 61 for diagrams
A
K
