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Name: Night blindness is an X-linked dominantdisorder. An individual who ha
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Description: Night blindness is an X-linked dominantdisorder. An individual who has thegenotype XNX" for night blindness is agenetic carrierhomozygous dominantfemale with night blindnessfemale with normal vision

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Biology

"ght ess is ked domr disorder. An individual who has the genotype XNX" for night blindness is a genetic carrier homozygous dominant female with night blindness female with normal vision

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter9: Patterns Of Inheritance

Section: Chapter Questions

Problem 7SQ

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Similar questions

Attached are three pedigrees. For each trait, considerwhether it is or is not consistent with X-linked recessiveinheritance. In a sentence or two, indicate why or why not.
Assume that a trait is determined by an X-linked dominant gene. Ifthe mother exhibits the trait but the father does not, then theira. sons are more likely than their daughters to exhibit the trait.b. daughters are more likely than their sons to exhibit the trait.c. sons and daughters are equally likely to exhibit the trait
Color blindness is an X-linked trait caused by a recessive alle A carrier female marries a normal male a. How many male offspring can be expected to be color-blind and have a normal vison? b. How many female offspring can be expected to be carriers and to be normal?
In humans, unattached earlobes (E) are dominant to attached earlobes (e). If a child is born with unattached earlobes, and a mother with attached earlobes, and a dad with unattached earlobes, what is genotype of the dad? O a. EE or Ee O b. ee O c. Ee O d. Ee or ee O e. EE
A human disease known as vitamin D–resistant rickets isinherited as an X-linked dominant trait. If a male with thedisease produces children with a female who does not have thedisease, what is the expected ratio of affected and unaffectedoffspring?
Explain why X-linked recessive disorders are more common inmales than in females
Cystic fibrosis is a genetic disorder that damages the tissues of the lungs. A – normala - afflicted Which cross between parental genotypes would result in a child expressing this condition?
Explain why X-linked recessive traits are more likely to occur inmales.
How many alleles of genesthat condition X-linked traitsdo female and maleindividuals respectivelypresent?
Male-pattern baldness is an X-linked recessive trait (Xb). A father with a genotype XBY and a mother with a genotype XBXb has a son. What is the percent chance that the son will inherit male-pattern baldness?
Hemophilia is an X-linked recessive disorder in humans. If a heterozygouswoman has children with an unaffected man, what are the probabilitiesthat she will have the following combinations of children? A. An affected sonB. Four unaffected offspring in a rowC. An unaffected daughter or sonD. Two out of five offspring that are affected
in humans brown eyes (B) are dominant over blue (b).A brown eye man marries a blue-eyed woman and they have three children , two of whom are brown eyed and one of whom is blue eyed.Draw the punnett square that illustrate this marrage.what is the man's genotype ? what are the genotype of the children?