Answered: When many families were tested for…

When many families were tested for their ability to taste the chemical PTC, the parental pairs were grouped into three types and the progeny totaled. The results were as follows:

Essentials Health Info Management Principles/Practices

4th Edition

ISBN:9780357191651

Author:Bowie

Publisher:Bowie

Chapter7: Numbering & Filing Systems And Record Storage & Circulation

Section7.2: Filing Systems

Problem 2E

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Question

When many families were tested for their ability to taste the chemical PTC, the parental pairs were grouped into three types and the progeny totaled. The results were as follows:

Assuming that PTC tasting is dominant (P) and nontaster is recessive (p), how can the progeny ratios in each of the three types of matings be accounted for?

Children
Nontasters
130
Parents
# of Families
Tasters
Taster x taster
425
929
Taster x nontaster
289
483
278
Nontaster x nontaster
86
218

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