Answered: In goats, a beard is produced by an…

Name: In goats, a beard is produced by an autosomal allele that is dominant
Uploaded: 2024-03-20T06:42:55.000Z
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Description: In goats, a beard is produced by an autosomal allele that is dominant in males and recessive in females. We’ll use the symbol b for the beard allele and + for the beardless allele. Another independently assorting autosomal allele that produces a bl

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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In goats, a beard is produced by an autosomal allele that is dominant in males and recessive in females. We’ll use the symbol b for the beard allele and + for the beardless allele. Another independently assorting autosomal allele that produces a black coat (W) is dominant over the allele for white coat (w). Part A and D have been completed for you and is shown in the image. Give the phenotypes and their expected proportions for the crosses B and C:

b) +bWw male x +bww female

c) ++Ww male x bbWw female

d. +bWw male X bbww female
b
W
b
W
+
+b
W
+
+b
b
Ww WW
W
bb
W
b
bb
W
WW WW
male
1/1 beard
female
1/2 beardless
1/2 beard:
1/2 black
1/2 white
1/2 black
1/2 white
-1/2 black
1/2 white

a. +bWw male
X +bWw female
b = beard
+= beardless
W = black, w = white
+bWw male x +bWw female
If male:
3/4 beard
1/4 beardless
3/4 black
1/4 white
3/4 black
1/4 white
sex-influenced
If female:
9/16
3/16
3/16
1/16

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