Finding Offspring Phenotypes from AB/ab Mating: Linkage Questions

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In summary, when individuals heterozygous for linked genes A/a and B/b are mated, the expected number of offspring with Ab or aB phenotypes can be found by multiplying the fractions of gametes (40% AB, 40% ab, 10% Ab, and 10% aB) with the total number of offspring (2000).
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fightboy
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Genes A/a and B/b are linked and known to be 20 map units apart. Individuals heterozygous for both of these genes (genotypes= AB/ab) were mated with each other. If there 2000 offspring from this cross, how many of the offspring would you expect to show Ab or aB phenotypes?
I know that the gametes for each individual separate into 40%AB, 40%ab, 10%Ab, and 10% aB, but I'm confused on how to find the number of offspring from these percentages. If someone could help it would be much appreciated!
 
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I moved the thread to the homework section.

Just multiply the fractions with 2000?
 

What is meant by "offspring phenotypes" in AB/ab mating?

Offspring phenotypes refer to the physical and observable traits of the offspring resulting from the mating of two individuals with different genotypes, specifically the AB and ab genotypes in this scenario. These phenotypes are determined by the combination of alleles inherited from each parent.

How do you determine the offspring phenotypes in AB/ab mating?

The offspring phenotypes can be determined by understanding the principles of Mendelian genetics and the concept of linkage. In this scenario, the AB and ab genotypes are linked, meaning they are located close together on the same chromosome. This makes it more likely for them to be inherited together, resulting in a specific set of phenotypes in the offspring.

Why is it important to know the offspring phenotypes in AB/ab mating?

Knowing the offspring phenotypes can provide valuable information about the inheritance patterns of certain traits and help predict the likelihood of certain traits being passed down to future generations. This information can also be useful in genetic counseling and breeding programs.

Can offspring phenotypes in AB/ab mating be predicted with 100% accuracy?

No, the inheritance of traits in AB/ab mating is subject to chance and cannot be predicted with 100% accuracy. However, an understanding of Mendelian genetics and linkage can help make accurate predictions about the likelihood of certain phenotypes appearing in the offspring.

Are there any other factors that can affect the offspring phenotypes in AB/ab mating?

Yes, there are other factors that can influence the inheritance of traits in AB/ab mating, such as genetic mutations, environmental factors, and epigenetics. These factors can contribute to variations in the offspring phenotypes, even within the same genotype combinations.

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