The R gene is a sex-linked gene in that causes curly hair in guinea pigs. Wild-type guinea pigs have straight hair. Below is a pedigree of a guinea pig family with a history of curly hair. Filled-in shapes indicate individuals who have curly hair. 1. II. III. Part 1 From the pedigree, is the curly hair trait inherited in a dominant or recessive manner? Briefly explain your answer, referring to specific observations in the pedigree.
The R gene is a sex-linked gene in that causes curly hair in guinea pigs. Wild-type guinea pigs have straight hair. Below is a pedigree of a guinea pig family with a history of curly hair. Filled-in shapes indicate individuals who have curly hair. 1. II. III. Part 1 From the pedigree, is the curly hair trait inherited in a dominant or recessive manner? Briefly explain your answer, referring to specific observations in the pedigree.
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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Transcribed Image Text:The male guinea pig indicated with a blue circle
mates with a female guinea pig that has normal
straight hair. What are the genotypes of these
parents? (XR designates the dominant allele and
X the recessive allele)
O Male XR Y; Female XRXR
O Male XR Y; Female xr xr
Male XRY; Female xRxr
Male X Y; Female XRxr
O Male X Y; Female X X
Male X Y; Female XRXR
What is the probability that any one of their
offspring will be a female with straight hair?
O O
O 1/4
O 1/4
O 2/3
What is the probability that any one of their
offspring will be a male with straight hair?
O O 0
O 1/2
O 1/4

Transcribed Image Text:The R gene is a sex-linked gene in that causes
curly hair in guinea pigs. Wild-type guinea pigs
have straight hair. Below is a pedigree of a
guinea pig family with a history of curly hair.
Filled-in shapes indicate individuals who have
curly hair.
I.
II.
III.
Part 1
From the pedigree, is the curly hair trait inherited in
a dominant or recessive manner? Briefly explain
your answer, referring to specific observations in the
pedigree.
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