Pedigree Studies (Leaving Cert Biology): Flashcards
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Practise the cards
12 cards from this deck
Purpose of pedigree studies
Purpose of pedigree studies
Trace inheritance of traits/disorders through generations
Squares in pedigree charts represent
Squares in pedigree charts represent
Males
Circles in pedigree charts represent
Circles in pedigree charts represent
Females
Red/fully shaded shapes in pedigree charts
Red/fully shaded shapes in pedigree charts
Affected individuals
Half-red circles in pedigree charts
Half-red circles in pedigree charts
Carrier females
Blue shapes in pedigree charts
Blue shapes in pedigree charts
Unaffected/normal individuals
What do carrier females have but not show symptoms of?
What do carrier females have but not show symptoms of?
One copy of affected gene
Pattern when more males affected than females
Pattern when more males affected than females
X-linked recessive
Which sex is more affected in X-linked recessive?
Which sex is more affected in X-linked recessive?
Males
Can females carry X-linked genes without symptoms?
Can females carry X-linked genes without symptoms?
Yes, as carriers
Do affected males pass X-linked disorder to sons?
Do affected males pass X-linked disorder to sons?
No
Daughters of affected males (X-linked)
Daughters of affected males (X-linked)
All become carriers