Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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#4 please

Chrome File Edit View History Bookmarks Profiles Tab Window Help
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Columbus Letter.pdf
YouTube
moodle.millikin.edu/pluginfile.php/232272/mod_resource/content/0/4%20genetic%20crosses.pdf
4 genetic crosses
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O
X in FA23-B1300 01 - CRN:10060: A X
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9,306
4 genetic crosses
1 / 2
100% + |
females. What chromosome likely carries the gene for this trait? Explain why this trait is
more common in males. Use a Punnett square to help demonstrate your explanation.
4. The hypothesis of blended inheritance (see slides from 8/24/22) states that an
offspring's traits are an intermediate form between the two parents' traits. The
incomplete dominance pattern of inheritance seems to support this idea at first glance.
However, when you investigate this further you can see that it actually does support the
discrete trait hypothesis. Explain why this is. Hint: set up several crosses of a trait
showing incomplete dominance, and look for examples where the phenotype of the
offspring is NOT a blend of the two parents.
SEP
29
5. Unicorn lily flowers have four different alleles for flower color: purple, magenta, orange,
or silver. Based on the following crosses, explain the relationship between these three
alleles in terms of which are dominant, recessive, or have another relationship. In the
examples listed below, all parents are true-breeding.
Purple x magenta → All F1 offspring are purple
Silver x magenta → All F1 offspring are magenta
Orange x silver →All F1 offspring are orange
Purple x orange → All F1 offspring are purple
Orange x magenta → All F1 offspring display flowers with orange & magenta petals
tv
▬
2
A
W
44
P
80
Thu Sep 29 1:08 PM
☐M :
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Transcribed Image Text:Chrome File Edit View History Bookmarks Profiles Tab Window Help Gmail Columbus Letter.pdf YouTube moodle.millikin.edu/pluginfile.php/232272/mod_resource/content/0/4%20genetic%20crosses.pdf 4 genetic crosses Translate O X in FA23-B1300 01 - CRN:10060: A X New Tab 9,306 4 genetic crosses 1 / 2 100% + | females. What chromosome likely carries the gene for this trait? Explain why this trait is more common in males. Use a Punnett square to help demonstrate your explanation. 4. The hypothesis of blended inheritance (see slides from 8/24/22) states that an offspring's traits are an intermediate form between the two parents' traits. The incomplete dominance pattern of inheritance seems to support this idea at first glance. However, when you investigate this further you can see that it actually does support the discrete trait hypothesis. Explain why this is. Hint: set up several crosses of a trait showing incomplete dominance, and look for examples where the phenotype of the offspring is NOT a blend of the two parents. SEP 29 5. Unicorn lily flowers have four different alleles for flower color: purple, magenta, orange, or silver. Based on the following crosses, explain the relationship between these three alleles in terms of which are dominant, recessive, or have another relationship. In the examples listed below, all parents are true-breeding. Purple x magenta → All F1 offspring are purple Silver x magenta → All F1 offspring are magenta Orange x silver →All F1 offspring are orange Purple x orange → All F1 offspring are purple Orange x magenta → All F1 offspring display flowers with orange & magenta petals tv ▬ 2 A W 44 P 80 Thu Sep 29 1:08 PM ☐M :
Expert Solution
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Solution

Incomplete dominance: 

  • The type of genetic interaction where the offspring is not similar to the parental ones completely instead is an intermediate for each allele from the parent is called incomplete dominance. 
  • The genotypic ratio remains unchanged here. 
  • But the phenotypic ratio also comes out to be like the genetic ratio which is 1:2:1. 
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