In humans, Tongue roller and widows peak are dominant over non-tongue roller and straight hairline.  A heterozygote in both regards (for both tongue roller and hairline) reproduces with a similar heterozygote (they have the same genotype as the other parent).  What is the chance of any one child having the same phenotypes as the parents?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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In humans, Tongue roller and widows peak are dominant over non-tongue roller and straight hairline.  A heterozygote in both regards (for both tongue roller and hairline) reproduces with a similar heterozygote (they have the same genotype as the other parent).  What is the chance of any one child having the same phenotypes as the parents? 

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