#1 XX x XY 50% boys, 50% girls
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#1 XX x XY
50% boys, 50% girls
X X
X XX XX
Y XY XY
XC Xc
Xc XCXc XcXc
Y XCY XcY
#2
a. XCXc x XcY
b. XCXc x XcXc
XCY x XcY
c. 50% female carrier
d. 50% have the disease
e. Father got bad x from his mother
XD Xd
XD XDXD XDXd
Y XDY XdY
#3 D= no disease d = disease
XDXd x XDY
a. 50% female carrier
b. 50% male will get disease
c. Females have 2 x’s- so less chance for disease
#4. IAIA x IoIo
PR: 1 A (all blood type A)IA IA
Io IAIo IAIo
Io IAI0 IAIo
#5 Blood type A is IAIA or IAIo
Blood type AB is IAIB
Children could be: A, B, AB
IA IA
IA IAIA IAIA
IB IAIB IAIB
IA Io
IA IAIA IAIo
IB IAIB IBIo
#6 Kathys father ISIS straight Kathys mother ICIC curly Kathy ISIC wavy Kathys brother ISIC wavy
#7. Kathy ISIC x ISIS
50% straight50% wavy
IS IC
IS ISIS ISIC
IS ISIS ISIC
#8 Kathy ISIC x ICIC
50% curly
50% wavy
IS IC
IC ISIC ICIC
IC ISIC ICIC
#9 Kathy ISIC x ISIC
25% straight
50% wavy
25% curly
IS IC
IS ISIS ISIC
IC ISIC ICIC