Question: A true breeding white strain of flower was crossed with a true breeding orange strain. All of the F1 progeny were orange in phenotype. When the F1 offspring were crossed with one another, the following offspring phenotype frequencies were obtained in the F2 generation:
F2: 98 Orange and 78 White
Using this information, postulate the role of mutant genes and their products in producing
the observed phenotypes:
A.) Designate alleles and give the general genotypic formula for parental strains and
the F1
B.) Give the general genotypic formula that defines each color class and
C.) Explains the phenotypic ratio obtained
D.) Diagram/draw a metabolic pathway that explains the formation of each pigment
(or lack thereof).
I need someone to double check my work.
A.) Parent generation: white (aabb) orange (AABB) and first generation has to be (AABb) because all of the first generation is orange as given from the problem above.
B.) Color class genotypes: white can be (A_bb;aaB_;aabb) and orange can only be A_B_
c.) F2 generation is 98 orange and 78 white from the data given. We have to split into 16 individuals.
ALL OF THE INFORMATION IS LISTED BELOW. There is no missing data or missing information. Please do not comment missing information or data if you dont understand the concept as there is NO missing information. Thank you.
Question: A true breeding white strain of flower was crossed with a true breeding orange strain. All of the F1 progeny were orange in phenotype. When the F1 offspring were crossed with one another, the following offspring phenotype frequencies were obtained in the F2 generation:
F2: 98 Orange and 78 White
Using this information, postulate the role of mutant genes and their products in producing
the observed phenotypes:
A.) Designate alleles and give the general genotypic formula for parental strains and
the F1
B.) Give the general genotypic formula that defines each color class and
C.) Explains the phenotypic ratio obtained
D.) Diagram/draw a metabolic pathway that explains the formation of each pigment
(or lack thereof).
I need someone to double check my work.
A.) Parent generation: white (aabb) orange (AABB) and first generation has to be (AABb) because all of the first generation is orange as given from the problem above.
B.) Color class genotypes: white can be (A_bb;aaB_;aabb) and orange can only be A_B_
c.) F2 generation is 98 orange and 78 white from the data given. We have to split into 16 individuals.
98/98+78(16)=9 and 78/78+98(16)=7…this gives us a nine to seven ratio leading us to either complementary terms or duplicate recessive
