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(7). Ernest Hemingway had a number of polydactyl cats. Someone carefully followed them for 25 generations and found that the trait never skipped a generation. However, some cats with the trait had only one paw with one extra digit, but other cats had extra digits on many paws and would show more than one extra digit per paw. Which of the following is the best conclusion from this result? A.For these cats, the trait was fully penetrant but showed variable expressivity B.For these cats, the trait was fully expressive but showed variable penetrance. C.For these cats, the trait was fully penetrant and expressive D.For these cats, the trait was neither fully expressive nor fully penetrant.

(7). Ernest Hemingway had a number of polydactyl cats. Someone carefully followed them for 25 generations and found that the trait never skipped a generation. However, some cats with the trait had only one paw with one extra digit, but other cats had extra digits on many paws and would show more than one extra digit per paw. Which of the following is the best conclusion from this result? A.For these cats, the trait was fully penetrant but showed variable expressivity B.For these cats, the trait was fully expressive but showed variable penetrance. C.For these cats, the trait was fully penetrant and expressive D.For these cats, the trait was neither fully expressive nor fully penetrant.

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Genetics Question 7

(7). Ernest Hemingway had a number of polydactyl cats. Someone carefully followed them for 25 generations and found that the trait never skipped a generation. However, some cats with the trait had only one paw with one extra digit, but other cats had extra digits on many paws and would show more than one extra digit per paw. Which of the following is the best conclusion from this result? A.For these cats, the trait was fully penetrant but showed variable expressivity B.For these cats, the trait was fully expressive but showed variable penetrance. C.For these cats, the trait was fully penetrant and expressive D.For these cats, the trait was neither fully expressive nor fully penetrant.
Transcribed Image Text:(7). Ernest Hemingway had a number of polydactyl cats. Someone carefully followed them for 25 generations and found that the trait never skipped a generation. However, some cats with the trait had only one paw with one extra digit, but other cats had extra digits on many paws and would show more than one extra digit per paw. Which of the following is the best conclusion from this result? A.For these cats, the trait was fully penetrant but showed variable expressivity B.For these cats, the trait was fully expressive but showed variable penetrance. C.For these cats, the trait was fully penetrant and expressive D.For these cats, the trait was neither fully expressive nor fully penetrant.
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