When considering two genes, gene B and gene R, what is the phenotype ratio when a...
When considering two genes, gene B and gene R, what is the phenotype ratio when a plant with genotype BbRr is mated with another plant with genotype BbRr?
Homework Answers
As no other information is provident, it is assumed that the B and R alleles should be dominant over b and r alleles. BR phenotype will express B and r allele. Br phenotype will express B and r allele, bR phenotype will express b and R alleles while br phenotype will express b and r alleles.
| Plant 1 |
BbRr |
||||
| Plant 2 |
BR |
Br |
bR |
br |
|
|
BbRr |
BR |
BBRR BR |
BBRr BR |
BbRR BR |
BbRr BR |
|
Br |
BBRr BR |
BBrr Br |
BbRr BR |
Bbrr Br |
|
|
bR |
BbRR BR |
BbRr BR |
bbRR bR |
bbRr bR |
|
|
br |
BbRr BR |
Bbrr Br |
bbRr bR |
Bbrr br |
The phenotypic ratio will be 9:3:3:1
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