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Cornsnake Morph Guide ®

Genetics Tutorial

Charles Pritzel

Answers to Genetics Practice Problems

Page 6:

1A Normal
1B Normal
1C Shows Triangle Trait

2A Shows Square Trait
2B Shows Square Trait
2C Normal

3A Shows Diamond Trait
3B Normal
3C Intermediate (Diamond/Normal)

Page 19:

1 Aa.
2 Aa, aa.
3 Aa, AA.
4 AA, Aa, aA, aa.
5 AaBb.

6-	Aa	aa
Bb	AaBb	aaBb
bb	Aabb	aabb

7-	Aa	aa
BB	AaBB	aaBB
Bb	AaBb	aaBb
bB	AabB	aabB
bb	Aabb	aabb

7-	AA	Aa	aA	aa
BB	AABB	AaBB	aABB	aaBB
Bb	AABb	AaBb	aABb	aaBb
bB	AAbB	AabB	aAbB	aabB
bb	AAbb	Aabb	aAbb	aabb

9- AaBbCc.

10-	Aa	aa
Bb	AaBbcc	aaBbcc
bb	Aabbcc	aabbcc

11- (step 1)	Aa	aa
Bb	AaBb	aaBb
bb	Aabb	aabb

11- (step 2)	CC	Cc
AaBb	AaBbCC	AaBbCc
aaBb	aaBbCC	aaBbCc
Aabb	AabbCC	AabbCc
aabb	aabbCC	aabbCc

12- (step 1)	AA	Aa	aA	aa
BB	AABB	AaBB	aABB	aaBB
Bb	AABb	AaBb	aABb	aaBb
bB	AAbB	AabB	aAbB	aabB
bb	AAbb	Aabb	aAbb	aabb

12- (step 2)	CC	Cc	cC	cc
AABB	AABBCC	AABBCc	AABBcC	AABBcc
AABb	AABbCC	AABbCc	AABbcC	AABbcc
AAbB	AAbBCC	AAbBCc	AAbBcC	AAbBcc
AAbb	AAbbCC	AAbbCc	AAbbcC	AAbbcc
AaBB	AaBBCC	AaBBCc	AaBBcC	AaBBcc
AaBb	AaBbCC	AaBbCc	AaBbcC	AaBbcc
AabB	AabBCC	AabBCc	AabBcC	AabBcc
Aabb	AabbCC	AabbCc	AabbcC	Aabbcc
aABB	aABBCC	aABBCc	aABBcC	aABBcc
aABb	aABbCC	aABbCc	aABbcC	aABbcc
aAbB	aAbBCC	aAbBCc	aAbBcC	aAbBcc
aAbb	aAbbCC	aAbbCc	aAbbcC	aAbbcc
aaBB	aaBBCC	aaBBCc	aaBBcC	aaBBcc
aaBb	aaBbCC	aaBbCc	aaBbcC	aaBbcc
aabB	aabBCC	aabBCc	aabBcC	aabBcc
aabb	aabbCC	aabbCc	aabbcC	aabbcc

13- aa = 1/4. bb = 1/2. cc = 1/2, dd = 1/4. Total is 1 in 64.

14- aa = 1/2. bb = 1/2. cc = 1/2. dd = 1/2. Total is 1 in 16.

15- aa = 1/4. bb = 1/4. cc = 1/4. dd = 1/4. Total is 1 in 256.

16a- aa = 1/4. bb = 1/4. Total is 1 in 16.

(Ax means Aa, aA, or AA.)
(Dx means Dd, dD, or DD.)
16b- Ax = 3/4. bb = 1/4. cc = 1/4. Dx = 3/4. Total is 9 in 256.

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