Answer:
A)
1. double merle with short coat: 1/4 (e).
2. double merle with long coat: 0 (a).
3. merle with short coat: 1/2 (g).
4. merle with long coat: 0 (a).
5. solid with short coat: 1/4 (e).
6. solid with long coat: 0 (a).
B)
1. double merle with short coat: 3/16 (d).
2. double merle with long coat: 1/16 (b)
3. merle with short coat: 3/8 (f).
4. merle with long coat: 1/8 (c).
5. solid with short coat: 3/16 (d).
6. solid with long coat:1/16 (b)
Explanation:
<u>Available data</u>:
- CSCS individuals display a solid coat
- CMCS individuals are merle and show patches of fur with a lighter, mottled effect
- CMCM individuals are "double merle" and show patches of fur with much more pronounced lightening
- short coats, L-, being dominant to long coats, ll.
- Cross: merle long-coated dog x merle short-coated dog
Parentals) CMCS ll x CMCS LL
Gametes) CMl, CSl, CMl, CSl
CML, CSL, CML, CSL
Punnett square) CMl CMl CSl CSl
CML CMCM Ll CMCM Ll CMCS Ll CMCS Ll
CML CMCM Ll CMCMLl CMCS Ll CMCS Ll
CSL CMCS Ll CMCS Ll CSCS Ll CSCS Ll
CSL CMCS Ll CMCS Ll CSCS Ll CSCS Ll
F1) 4/16 = 1/4 = 25% CMCM Ll, double merle short-coated individuals
4/16 = 1/4 = 25% CSCS Ll, solid short-coated individuals
8/16 = 1/2 = 50% CMCS Ll, merle chort-coated
- Cross: merle short-coated dog x merle short-coated dog
Parentals) CMCS Ll x CMCS Ll
Gametes) CML, CMl, CSL, CSl, CML, CMl, CSL, CSl
Punnett square) CML CMl CSL CSl
CML CMCM LL CMCM Ll CMCS LL CMCS Ll
CMl CMCM Ll CMCM ll CMCS Ll CMCS ll
CSL CMCS LL CMCS Ll CSCS LL CSCS Ll
CSl CMCS Ll CMCS ll CSCS Ll CSCS ll
F1) 1/16 CMCM LL, double merle short-coated individual
2/16 CMCM Ll, double merle short-coated individual
1/16 CMCM ll, double merle long-coated individual
2/16 = 1/8 CMCS LL, merle short-coated individual
4/16 = 2/8 CMCS Ll, merle short-coated individual
2/16 = 1/8 CMCS ll, merle long-coated individual
1/16 CSCS LL, solid short-coated individual
2/16 = 1/8 CSCS Ll, solid short-coated individual
1/16 CSCS ll, solid long-coated individual
