Black fish are crossed with white fish and all gray fish are born. Prove how thi
ID: 145424 • Letter: B
Question
Black fish are crossed with white fish and all gray fish are born. Prove how this
could have happened?
F1 generation
Parents Fill in the boxes
Genotype
Phenotype
Possible Genotypes or phenotypes
Black Fish,White fish, Grey Fish
BF,WF,GF
Parent 1
Black
BF
Parent 2
White
WF
Punnett Square show your cross
B
B
b
Bb
Bb
B
Ratios Fill in the boxes
Genotypic ratio
Phenotypic ratio
Offspring Genotype or Phenotype
Ratio
F2 generation
Parents Fill in the boxes
Genotype
Phenotype
Possible Genotypes or phenotypes
Parent 1
Parent 2
Punnett Square show your cross
Ratios Fill in the boxes
Genotypic ratio
Phenotypic ratio
Offspring Genotype or Phenotype
Ratio
Explanation:
What happened? Use the data you just created to support your answer (Ratios, genotypes, pheontypes, etc.). Will there ever be black or white fish in the population again after the first cross? How would you get black and white fish again?
Genotype
Phenotype
Possible Genotypes or phenotypes
Black Fish,White fish, Grey Fish
BF,WF,GF
Parent 1
Black
BF
Parent 2
White
WF
Explanation / Answer
-> yes the black and white fish will be back in the population because in first cross the ratio is 1:2:1 and hence there is one black fish two grey fishes and one white fish in the population
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