http://www.youtube.com/watch?v=TG8Ect3Xn7w

Introduction

GeneticsD. Ann Currie RN,MSN

2012

How can you determine possible outcomes of genetic combinations?

Mom DadBrown eyes Green eyesBr/b (hybrid) G/b(hybrid)

Br/G------ Br/b----- G/b-----b/b Children Eye ColorsBrown Brown Green Blue

Eye colorsDominant vs recessive

Mom Dad O /Positive( Pos/neg.) O/Positive( Pos/neg.) hybrid hybrid

Children

O/Positive(Pos/pos)---O/Pos(Pos/neg.)---- 25% 50% hybrid O/Pos (Pos/neg. )--O/negative. (neg./neg.) 25% 100% 0 type blood

Type/Rh examples

Mom Dad Carrier Carrier N/c N/c

Children N/N------N/c-------N/c-------c/c Normal carrier carrier condition 25% 50% carrier 25%

Recessive Trait

Mom Dad Carrier Normal N/c N/N

Children N/N--------N/N------N/c--------N/c 50% 50% normal Carriers 0% Condition

Recessive Trait

Mom Dad X/Xh X/Y carrier normal Children

X/X -------X/Y-------Xh/X------Xh/Y 25% 25% 25% 25% normal normal carrier

condition female male female male

Sex-linked/x-linked Conditions

Mom Dad D/n n/n

Children

D/n----D/n-----n/n------n/n 50% 50% condition normal

Dominant Trait

Mom Dad D/n D/n

Children D/D----D/n------D/n -----n/n 75% 25% Condition normal

Dominant Trait

Mom Dad D/D D/n Children D/D-----D/n-----D/D----------D/n 100% condition

Dominant Trait

Questions? http://www.youtube.com/watch?v=TG8Ect3Xn7w

The End