Answered: A couple consulted a genetic counselor…

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter14: Human Inheritance

Section: Chapter Questions

Problem 7SA: Color blindness is a case of ________ inheritance. a. autosomal dominant c. X-linked dominant b....

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A couple consulted a genetic counselor and they found out the following: Basha: A blood type, blue eye color, normal skin condition, carrier of cystic fibrosis gene, and carrier of hemophilia gene Popoy: B blood type, has brown eye color, normal skin condition, carrier of cystic fibrosis gene and negative to hemophilia. Clues for the table: • Blood Type: The probability that they’ll have an offspring with blood type the same as Popoy is 25% only • Eye Color: The probability that they’ll have an offspring with brown eye color is 75%. • Skin condition: The probability that their offspring will be an albino is 25% What is the probability that the offspring will have/ be: A. a girl with all the same phenotype as her mother. B. 2 girls with neither the blood type of the parents. C. 2 boys with normal skin color and carrier of cystic fibrosis gene; 1 girl with normal skin color and negative to cystic fibrosis. D. 2 girls carrier of both cystic fibrosis gene and hemophilia, a boy † positive to both cystic fibrosis and hemophilia, a boy negative to both cystic fibrosis and hemophilia E. A boy with AB blood type, has brown eye color, normal skin color, negative to both cystic fibrosis and hemophilia; 3 girls with O blood type, has blue eye color, normal skin color, carrier to both cystic fibrosis and hemophilia; A boy with A blood type, has brown eye color, normal skin color, positive to cystic fibrosis, negative to hemophilia.

Probability (fraction) of the
joffspring
Traits
Mode of
Inheritance Basha
Genotypes
Роpoy
Blood Type Codominance
Autosomal/
Complete
Dominance
Autosomal
(recessive)
Eye Color
Skin
Condition
(use letter
A/a)

Cystic
Autosomal/
Fibrosis (use Lethal
letter C/c)
(recessive)
Sex-linked
Hemophilia (recessive)

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