Question

Start by writing out your theoretical crosses for your fly traits. You should have four crosses for each reciprocal cross:

•Mutant female x wild type male both autosomal

•Mutant female x wild type male both X-linked

•Mutant female x wild type male traitAautosomal, trait B X-linked

•Mutant female x wild type male trait B autosomal, trait A X-linked

•Mutant male x wild type female both autosomal

•Mutant male x wild type female both X-linked

•Mutant male x wild type female traitAautosomal, trait B X-linked

•Mutant male x wild type female trait B autosomal, trait A X-linked

Wild Type: Red Eyes and Long Wings

Mutation: White eyes are short wings

Answer 1

Answer:

Representation:

• Trait A= Eye color

1. Autosomal

• Red (Wildtype) = E= dominant, genotype = EE(Homozygous), Ee (Heterozygous)
• White (mutant) e= recessive, genotype = ee
• Trait B= Wing
• Long (Wildtype) = dominant, genotype = WW/Ww
• Short (mutant)= recessive, genotybe = ww

2. X-linked

Male:

• Red eye = XEY
• White eye = XeY
• Long wings = XWY
• Short wings = XwY

Female:

• Red eye = XEXE /XE Xe
• White eye = Xe Xe
• Long wings = XWXW/ XWXw
• Short wings = XwXw

1. Cross: mutant female x wildtype male (Both autosomal)

EEWW x eeww

	EW	EW
ew	EeWw	EeWw
ew	EeWw	EeWw

2. Cross: mutant female x wildtype male (Both X-linked)

Trait A: XEY x Xe Xe

	Xe	Xe
XE	XE Xe	XE Xe
Y	XeY	XeY

Trait B: XWY x Xw Xw

	Xw	Xw
XW	XW Xw	XW Xw
Y	XwY	XwY

3. Cross: mutant female x wildtype male (Trait A autosomal, B X-linked)

EEXWY x ee XwXw

	eXw	e Xw
EXW	Ee XW Xw	Ee XW Xw
EY	Ee XwY	Ee XwY

4. Cross: mutant female x wildtype male (Trait B autosomal, A X-linked)

WWXEY x ww XeXe

	wXe	wXe
WXE	WwXE Xe	WwXE Xe
WY	WwXeY	WwXeY

5. Cross: mutant male x wildtype female (Both autosomal)

EEWW x eeww

	ew	ew
EW	EeWw	EeWw
EW	EeWw	EeWw

6. Cross: mutant male x wildtype female (Both X-linked)

Trait A: XEXE x XeY

	XE	XE
Xe	XE Xe	XE Xe
Y	XE Y	XEY

Trait B: XWXW x XwY

	XW	XW
Xw	XW Xw	XW Xw
Y	XW Y	XW Y

7. Cross: mutant male x wildtype female (Trait A autosomal, B X-linked)

EEXWXW x ee XwY

	EXW	EXW
eXw	Ee XW Xw	Ee XW Xw
eY	EeXWY	EeXWY

8. Cross: mutant male x wildtype female (Trait B autosomal, A X-linked)

WWXEXEx wwXeY

	WXE	WXE
wXe	WwXEXe	WwXEXe
wY	WwXE Y	WwXEY

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