Ques 30-31. Tay-Sachs disease is caused by an allele, t, that is recessive to the normal...
Ques 30-31. Tay-Sachs disease is caused by an allele, t, that is recessive to the normal allele, T. A normal man and normal woman have three children, a normal son, a normal daughter, and a daughter with the disease.
30. The genotype of the normal woman is a) TT b) Tt c) tt d) a or b are possible e) b or c are possible
31. The probability that the normal son is a Tt carrier of the disease is a) 2/3 b) 1/3 c) 1/2 d) 1/4
Please show your work.
Homework Answers
Answer :
Cross : Tt X Tt
Punnett square:
| T | t | |
| T | TT | Tt |
| t | Tt | tt |
A normal man (Tt) and normal woman (Tt) have three children, a normal son(TT / Tt), a normal daughter(TT / Tt), and a daughter with the disease (tt).
Tay-Sachs is a autosomal recessive disease. Expressed in recessive homozygous condition i.e., tt.
Carrier ---> Tt but normal.
30. The Genotype of the normal woman is --- (b). Tt
31. The probability that the normal son is a TT carrier of the disease is --- (c). 1/2
Add Answer to:
Ques 30-31. Tay-Sachs disease is caused by an allele, t, that is
recessive to the normal...
Use the information presented below to answer questions 6 - 8. Tay-Sachs disease is a recessive...
Use the information presented below to answer questions 6 - 8. Tay-Sachs disease is a recessive hereditary abnormality causing death within the first few years of life in individuals with the genotype tt. These individuals never reach sexual maturity. Individuals with the genotype T do not become diseased. Abnormally shortened fingers (brachyphalangy) are due to the presence of alleles in the heterozygous condition (Bb) located at a different locus. Geneticists observed that brachyphalangy was conveyed by the dominant allele and...
Tay-Sachs Disease is an autosomal recessive disease. That means that it is carried on one of...
Tay-Sachs Disease is an autosomal recessive disease. That means that it is carried on one of the autosomal chromosomes and that only individuals with the two recessive disease alleles will have the disease phenotype. John and Sue are both carriers of the disease. Use the letters T and t to represent alleles. a.) What is John’s genotype? b.)Sue’s genotype? c.) What percentage of their children would you predict to have Tay-Sachs Disease? Show your work with a Punnett square.
Huntington's disease is caused by the allele H, which is completely dominant to the normal recessive...
Huntington's disease is caused by the allele H, which is completely dominant to the normal recessive allele h. Consider a couple where the man has the genotype Hh, and the woman has the genotype hh. What is the chance that their first child will develop Huntington's disease? A. 0% B. 25% C. 75% D. 50%
Tay-Sachs disease is an autosomal recessive disorder. Among Ashkenazi Jews of central European ancestry about in...
Tay-Sachs disease is an autosomal recessive disorder. Among Ashkenazi Jews of central European ancestry about in 1/3600 children are born with Tay-Sachs disease. What is the frequency for being a carrier for Tay-Sachs in this population? A carrier does not show the trait but can pass it on to his/her offspring.
Tay-Sachs disease is an autosomal recessive disorder caused by a mutation in the HEXA gene that...
Tay-Sachs disease is an autosomal recessive disorder caused by a mutation in the HEXA gene that results in progressive deterioration of the nervous system. Affected indivisuals usually die by age 4. Let D represent the wildtype allele and d the disease-causing allele. Because the Tay-Sachs disease allele has been observed at relatively high frequencies in several human populations, it has ocassionally been suggested that this locus may be subject to balancing selection due to heterozygote advantage. Here we will explore...
BATO manner. This diseaSe is inherited in an autosomal recessive (15 pts) Tay-Sachs disease is a...
BATO manner. This diseaSe is inherited in an autosomal recessive (15 pts) Tay-Sachs disease is a mutation in the HEXA gene, resulting in low EXA gene, resulting in low level of the enzyme hexosaminidase A. Tay-Sachs abilities and results in death by the disease causes deterioration of mental and physical age of four. e in which a family member (shaded) died from Tay-Sachs disease. n she had a blood finds that she is a carrier for Tay-Sachs disease whe Individual...
16.Tay-Sachs is an autosomal recessive disease. A couple (Jack & Jill) is worried about having a...
16.Tay-Sachs is an autosomal recessive disease. A couple (Jack & Jill) is worried about having a child that has Tay-Sachs because the man had a brother with the deadly disease. Since they wanted to have children, they sought the advice of a genetic counselor. During the course of the interview the sounselor determines that Jack's parents were not affected with Tay-Sachs, yet his brother had it. What is immediately known about the genotypes of the man's parents? Is the genotype...
hemophilia is inherited as an Xlinked recessive mutation. Tay Sachs disease (ts) is inherited as an...
hemophilia is inherited as an Xlinked recessive mutation. Tay Sachs disease (ts) is inherited as an autosomal recessive. A hemophilic man is heterozygous for the ts allele . what fraction of his sperm will carry the recessive ts allele and hemophilia allele together ?
2) Tay-Sachs disease is an autosomal recessive neurological disorder that is fatal in infancy. Despite its...
2) Tay-Sachs disease is an autosomal recessive neurological disorder that is fatal in infancy. Despite its invariably lethal effect, Tay-Sachs disease occurs at very high frequency in some Central and Eastern European (Ashkenazi) Jewish populations. In certain Ashkenazi populations, 1 in 1000 infants has Tay-Sachs disease. Population biologists believe the high frequency is a consequence of genetic bottlenecks caused by pogroms (genocide) that have reduced the population multiple times in the last several hundred years. a) In the population described,...
6. Hemochromatosis is an inherited disease caused by a recessive allele. If a woman and her...
6. Hemochromatosis is an inherited disease caused by a recessive allele. If a woman and her husband, who are both carriers, have three children, what is the probability of each of the following? (a) All three children are of normal phenotype. (b) One or more of the three children have the disease. (c) All three children have the disease. (d) At least one child is phenotypically normal. (Note: It will help to remember that the probabilities of all possible outcomes...
Use the information presented below to answer questions 6 - 8. Tay-Sachs disease is a recessive hereditary abnormality causing death within the first few years of life in individuals with the genotype tt. These individuals never reach sexual maturity. Individuals with the genotype T do not become diseased. Abnormally shortened fingers (brachyphalangy) are due to the presence of alleles in the heterozygous condition (Bb) located at a different locus. Geneticists observed that brachyphalangy was conveyed by the dominant allele and...
BATO manner. This diseaSe is inherited in an autosomal recessive (15 pts) Tay-Sachs disease is a mutation in the HEXA gene, resulting in low EXA gene, resulting in low level of the enzyme hexosaminidase A. Tay-Sachs abilities and results in death by the disease causes deterioration of mental and physical age of four. e in which a family member (shaded) died from Tay-Sachs disease. n she had a blood finds that she is a carrier for Tay-Sachs disease whe Individual...
16.Tay-Sachs is an autosomal recessive disease. A couple (Jack & Jill) is worried about having a child that has Tay-Sachs because the man had a brother with the deadly disease. Since they wanted to have children, they sought the advice of a genetic counselor. During the course of the interview the sounselor determines that Jack's parents were not affected with Tay-Sachs, yet his brother had it. What is immediately known about the genotypes of the man's parents? Is the genotype...
6. Hemochromatosis is an inherited disease caused by a recessive allele. If a woman and her husband, who are both carriers, have three children, what is the probability of each of the following? (a) All three children are of normal phenotype. (b) One or more of the three children have the disease. (c) All three children have the disease. (d) At least one child is phenotypically normal. (Note: It will help to remember that the probabilities of all possible outcomes...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago