b6 - inherited disorders Flashcards
1
Q
how are inherited disorders caused?
A
inheritance of certain alleles
2
Q
describe ‘polydactyly’
A
- a genetic disorder that gives you an extra finger or toe
3
Q
is polydactyly caused by a recessive or dominant gene, and what does it mean?
A
dominant, if the parents both have a dominant allele for their genotype, their child would most likely inherit the disorder
4
Q
why is polydactyly rare?
A
the mutation is rare
5
Q
describe ‘cystic fibrosis’
A
a genetic disorder where sufferers produce mucus that is thicker and stickier than normal, making it difficult to breathe
6
Q
what area of the body is most affected by CF?
A
lungs
7
Q
is CF a recessive or dominant trait?
A
recessive
