Answered: Let’s look at hair texture. Some people…

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

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Let’s look at hair texture. Some people have curly hair, some have straight hair and some express a trait
that is in-between (Incomplete Dominance), or wavy hair. Therefore curly and straight are both
homozygous and wavy is the expression of the heterozygous condition. Instead of using capital and lower
case letters, we’ll add a prime (`) to the letter. This is because one is not dominant over the other, and
they will both contribute to the phenotype. We can use H to indicate curly hair and H` to indicate straight
hair.
Given this information, complete the square:

Parent	Phenotype(appearance)	Genotype(alleles)
1	Curly hair	HH
2	Straight hair	H'H'

Do you remember where the alleles of each parent go?
Parents: Offspring:

Genotypes:

Phenotypes:

What are the potential phenotypes and genotypes of the offspring?

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