c) What is the probability that the offspring will not have sickle-cell anemia but will be a carrier (one normal-cell allele and one sickle-cell allele)? Interpret this probability. The probability is This means there is a % chance that a randomly selected offspring will be a carrier, but will not have sickle-cell anemia. (Type integers or decimals. Do not round.)

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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Part C
A gene is composed of two alleles. An allele can be either dominant or recessive. Suppose that a husband and wife, who are both carriers of the sickle-cell anemia
allele but do not have the disease, decide to have a child. Because both parents are carriers of the disease, each has one dominant normal-cell allele (S) and one
recessive sickle-cell allele (s). Therefore, the genotype of each parent is Ss. Each parent contributes one allele to his or her offspring with each allele being equally
likely. Complete parts a) through c) below.
a) Genes are always written with the dominant gene first. Therefore, there are two instances the offspring could have genotype Ss (one if the mother contributes the
dominant allele and the father contributes the non-dominant allele; and one if the father contributes the dominant allele and the mother contributes the non-dominant
allele). List the other two possible genotypes of the offspring.
SS,ss
(Use a comma to separate answers as needed.)
b) What is the probability that the offspring will have sickle-cell anemia? In other words, what is the probability that the offspring will have genotype ss? Interpret this
probability.
The probability is 0.25. This means that there is a 25 % chance that a randomly selected offspring will have sickle-cell anemia.
(Type integers or decimals. Do not round.)
c) What is the probability that the offspring will not have sickle-cell anemia but will be a carrier (one normal-cell allele and one sickle-cell allele)? Interpret this
probability.
The probability is. This means there is a
% chance that a randomly selected offspring will be a carrier, but will not have sickle-cell anemia.
(Type integers or decimals. Do not round.)
Transcribed Image Text:A gene is composed of two alleles. An allele can be either dominant or recessive. Suppose that a husband and wife, who are both carriers of the sickle-cell anemia allele but do not have the disease, decide to have a child. Because both parents are carriers of the disease, each has one dominant normal-cell allele (S) and one recessive sickle-cell allele (s). Therefore, the genotype of each parent is Ss. Each parent contributes one allele to his or her offspring with each allele being equally likely. Complete parts a) through c) below. a) Genes are always written with the dominant gene first. Therefore, there are two instances the offspring could have genotype Ss (one if the mother contributes the dominant allele and the father contributes the non-dominant allele; and one if the father contributes the dominant allele and the mother contributes the non-dominant allele). List the other two possible genotypes of the offspring. SS,ss (Use a comma to separate answers as needed.) b) What is the probability that the offspring will have sickle-cell anemia? In other words, what is the probability that the offspring will have genotype ss? Interpret this probability. The probability is 0.25. This means that there is a 25 % chance that a randomly selected offspring will have sickle-cell anemia. (Type integers or decimals. Do not round.) c) What is the probability that the offspring will not have sickle-cell anemia but will be a carrier (one normal-cell allele and one sickle-cell allele)? Interpret this probability. The probability is. This means there is a % chance that a randomly selected offspring will be a carrier, but will not have sickle-cell anemia. (Type integers or decimals. Do not round.)
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