THEME 2: Under certain conditions, we can use the ratios of the offspring from the single gene crosses to calculate the ratios of the offspring of crosses for multiple genes. Cross 1 AaBb x AaBb Cross 2 AaBbCc x AaBbCc a) Please use a branching diagram to find the genotypic ratios of the offspring of cross 1 illustrated above and complete with the resulting genotypes and ratios. (You do not need to upload the branch diagrams!) How many different genotypes are there in the offspring of this cross? Genotype ratios for the offspring of Cross 1 (please indicate both the ratio and the genotype for each one: e.g.: 3AABB:1aabb, etc): b) Please use a branching diagram to find the phenotypic ratios of the offspring of cross 2 and complete below the resulting phenotypes and ratios. (You do not need to upload the branch diagrams!) How many different phenotypes are in the offspring of this cross? Phenotype ratios for the offspring of Cross 2 (please indicate both the ratio and the phenotype for each one using D and R for dominant and recessive phenotypes respectively, for example 1DDD:2DRR, etc.): c) What mathematical operation are you using to calculate the ratios for multiple genes and what assumption are you making to be able to use it? I am using because I am making an assumption of

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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THEME 2: Under certain conditions, we can use the ratios of the offspring from the single gene crosses to
calculate the ratios of the offspring of crosses for multiple genes.
Cross 1 AaBb x AaBb
Cross 2 AaBbCc x AaBbCc
a) Please use a branching diagram to find the genotypic ratios of the offspring of cross 1 illustrated above and
complete with the resulting genotypes and ratios. (You do not need to upload the branch diagrams!)
How many different genotypes are there in the offspring of this cross?
Genotype ratios for the offspring of Cross 1 (please indicate both the ratio and the genotype for each one: e.g.:
3AABB:1aabb, etc):
b) Please use a branching diagram to find the phenotypic ratios of the offspring of cross 2 and complete below
the resulting phenotypes and ratios. (You do not need to upload the branch diagrams!)
How many different phenotypes are in the offspring of this cross?
Phenotype ratios for the offspring of Cross 2 (please indicate both the ratio and the phenotype for each one
using D and R for dominant and recessive phenotypes respectively, for example 1DDD:2DRR, etc.):
c) What mathematical operation are you using to calculate the ratios for multiple genes and what assumption are
you making to be able to use it?
I am using
because I am making an assumption of
Transcribed Image Text:THEME 2: Under certain conditions, we can use the ratios of the offspring from the single gene crosses to calculate the ratios of the offspring of crosses for multiple genes. Cross 1 AaBb x AaBb Cross 2 AaBbCc x AaBbCc a) Please use a branching diagram to find the genotypic ratios of the offspring of cross 1 illustrated above and complete with the resulting genotypes and ratios. (You do not need to upload the branch diagrams!) How many different genotypes are there in the offspring of this cross? Genotype ratios for the offspring of Cross 1 (please indicate both the ratio and the genotype for each one: e.g.: 3AABB:1aabb, etc): b) Please use a branching diagram to find the phenotypic ratios of the offspring of cross 2 and complete below the resulting phenotypes and ratios. (You do not need to upload the branch diagrams!) How many different phenotypes are in the offspring of this cross? Phenotype ratios for the offspring of Cross 2 (please indicate both the ratio and the phenotype for each one using D and R for dominant and recessive phenotypes respectively, for example 1DDD:2DRR, etc.): c) What mathematical operation are you using to calculate the ratios for multiple genes and what assumption are you making to be able to use it? I am using because I am making an assumption of
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