Answer:
a) 100% Gray
b) 100% albino
c) 16/32 albino, 9/32 gray, 3/32 yellow, 3/32 black, 1/32 cream
Explanation:
<u>Available data:</u>
- A-B-C-(gray);
- A-bbC- (yellow);
- aaB-C-(black);
- aabbC- (cream)
- A-B-cc (albino)
- A-bbC- (albino)
- aaB-cc (albino)
- aabbcc (albino)
<u>Cross a</u>
Parentals) AAbbCC x aaBBcc
Phenotype) Yellow Albino
Gametes) AbC, AbC, AbC, AbC aBc, aBc, aBc, aBc
AbC, AbC, AbC, AbC aBc, aBc, aBc, aBc
F1) 100% AaBbCc, Gray individuals
<u>Cross b</u>
Parentals) AaBBcc x AABbcc
Phenotype) Albino Albino
Gametes) ABc, ABc, ABc, ABc, ABc, ABc, Abc, Abc,
aBc, aBc, aBc, aBc ABc, ABc, Abc, Abc,
F1) 100% A-B-cc, Albino individuals
<u>Cross c</u>
Parentals) AaBbCc x AaBbcc
Phenotype) Gray Albino
Gametes) ABC, ABc, AbC, Abc, ABc, ABc, Abc, Abc,
aBC, aBc, abc, abc aBc, aBc, abc, abc
Punnett square)
ABC ABc AbC Abc aBC aBc abC abc
ABc AABBCc AABBcc AABbCc AABbcc AaBBCc AaBBcc AaBbCc AaBbcc
ABc AABBCc AABBcc AABbCc AABbcc AaBBCc AaBBcc AaBbCc AaBbcc
Abc AABbCc AABbcc AAbbCc AAbbcc AaBbCc AaBbcc AabbCc Aabbcc
Abc AABbCc AABbcc AAbbCc AAbbcc AaBbCc AaBbcc AabbCc Aabbcc
aBc AaBBCc AaBBcc AaBbCc AaBbcc aaBBCc aaBBcc aaBbCc aaBbcc
aBc AaBBCc AaBBcc AaBbCc AaBbcc aaBBCc aaBBcc aaBbCc aaBbcc
abc AaBbCc AaBbcc AabbCc Aabbcc aaBbCc aaBbcc aabbCc aabbcc
abc AaBbCc AaBbcc AabbCc Aabbcc aaBbCc aaBbcc aabbCc aabbcc
F1) 18/64 = 9/32 A-B-C, Gray
6/64 = 3/ 32 A-bbC-, Yellow
6/64 = 3/ 32 aaB-C-, Black
2/64 = 1/32 aabbC-, Cream
32/64 = 16/32 A-B-cc + aaB-cc, + A-bbcc + aabbcc, Albino
Ratio: 16:9:3:3:1
