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explain how these tail lengths were inherited by describing the mode of inheritance, indicating how many gene pairs were at work, and designating the genotypes of harvey, erma, and their 18cm tail offspring

Answer :

Harvey (aabbcc) and Erma (AABBCC) and their 18-cm offspring (AaBbCc) were the issues of this quantitative inheritance. Quantitative inheritance is the way by which tail length was passed down through generations.

A mode of inheritance known as quantitative inheritance is one in which multiple genes work together in an additive way (combination) to produce distinct inheritable traits like height with a contiguous variation.

The frequency of an extreme phenotype is 1/64, or one in every four animals.

The number of gene pairs is equal to log64 divided by log4.

The phenotype of 18 cm (F1) and 6 cm (F2) offspring would be the result of crossing Tt and tt, which would result in the birth of four (4) offspring:

Tt, Tt, tt, and tt.

As a result, the phenotype ratio of tall to short is as follows:

The phenotypic ratio is equal to 1:1.

Read more on Quantitative inheritance here:

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