Needing help!! Especially w/ # 3&5, not quite sure how to even set up punnet squ
ID: 30548 • Letter: N
Question
Needing help!! Especially w/ # 3&5, not quite sure how to even set up punnet square to get answer. bold letters are my responses so far. Question is asking for phenotype rations not genoype. Thanks in advance
2. (5 points) Below are a list of crosses and a list of progeny phenotypic rations. Each progeny ration may be used multiple times. Your answer should include the correct phenotypic ration matched with its cross.
List of crosses
1. Monohybrid self (diploids) D. 3:1 phenotypic ration (1:2:1 genotype)
2. Monohybrid testcross (diploids) A. 1:1 phenotypic ratio
3. Mutant x wild-type in a haploid A. 1:1 phenotypic ratio
4. Homozygous dominant x Homozygous recessive (diploid) E. 1:0 (4 displaying dominant phenotype)
5. Mutant 1 x Mutant 2 in a haploid A. 1:1 phenotypic ratio
List of phenotypic ratios observed in the progeny
A. 1:1
B. 1:2:1
C. 2:1:1
D. 3:1
E. 1:0
Explanation / Answer
Monohybrid self (diploids) D. 3:1
A
A
A
AA
AA
a
Aa
Aa
======================================
2. Monohybrid testcross (diploids) A. 1:1 phenotypic ratio
A
a
a
Aa
aa
a
Aa
aa
3. Mutant x wild-type in a haploid A. 1:1 phenotypic ratio
A
a
a
Aa
aa
a
Aa
aa
4. Homozygous dominant x Homozygous recessive (diploid) E. 1:0 (4 displaying dominant phenotype)
A
A
a
Aa
Aa
a
Aa
Aa
5. Mutant 1 x Mutant 2 in a haploid A. 1:1 phenotypic ratio
A
a
a
Aa
aa
a
Aa
aa
A
A
A
AA
AA
a
Aa
Aa
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