Linkage (Leaving Cert Biology): Flashcards
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12 cards from this deck
Definition of linkage
Definition of linkage
Two genes located on the same chromosome
Location of linked genes
Location of linked genes
On the same chromosome
How linked genes are inherited
How linked genes are inherited
Together as a unit
Linked genes during meiosis
Linked genes during meiosis
Do not separate
Linked genes during cell division
Linked genes during cell division
Remain together
How gametes receive linked genes
How gametes receive linked genes
As a unit
Ratio: het. dihybrid × hom. recessive (not linked)
Ratio: het. dihybrid × hom. recessive (not linked)
1:1:1:1
Ratio: het. dihybrid × het. dihybrid (not linked)
Ratio: het. dihybrid × het. dihybrid (not linked)
9:3:3:1
Ratio for linked genes
Ratio for linked genes
1:1 or 3:1
Linked genes & Law of Independent Assortment
Linked genes & Law of Independent Assortment
Do not follow it / violate it
Mendel's Second Law
Mendel's Second Law
Law of Independent Assortment
Effect of linked genes on variation
Effect of linked genes on variation
Reduce variation in offspring