In humans, hypercholesterolemia is a dominant autosomal disorder. Color-blindness is a recessive disorder carried on the...

In humans, hypercholesterolemia is a dominant autosomal disorder. Color-blindness is a recessive disorder carried on the X-chromosome. A woman with normal vision who does not have hypercholesterolemia takes her daughter to a doctor for an examination. In the course of the examination, the doctor discovers that the girl is color-blind and has hypercholesterolemia. What does the doctor automatically know about the genotype and phenotype of the girl’s father?

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gladiator answered 2 years ago

Retinitis pigmentosa, a form of blindness in humans, may be caused by a dominant autosomal gene,...

Retinitis pigmentosa, a form of blindness in humans, may be caused by a dominant autosomal gene, R, or a recessive autosomal gene, a. Thus only A_ rr individuals have normal sight. An afflicted man whose parents are both normal marries a woman of genotype AaRr. (A) What is the genotype of the afflicted man? (B) What proportion of the children are expected to suffer from this affliction if R and A map to different chromosomes?

A recessive allele on the X chromosome is responsible for red-green color blindness in humans. A...

A recessive allele on the X chromosome is responsible for red-green color blindness in humans. A woman with normal vision whose father is red-green color blind marries a male with normal vision. Which of the following best predicts the phenotypes of their children? A. All of the children will have normal vision. B. All of the daughters will have normal vision, and half of the sons will be red-green color blind. C. All of the daughters will have normal vision,...

4. In humans, red-green color blindness is recessive to normal sight. The gene for this trait is...

4. In humans, red-green color blindness is recessive to normal sight. The gene for this trait is carried on the X chromosome. In each of the following, give the genotype and phenotype of all possible offspring and their expected ratios. Give the phenotypic ratios of males ♂ and females ♀ separately (ALWAYS FOR X-LINKAGE): (a) a color-blind man married to a normal- sighted woman whose father is color-blind; (b) a man with normal color vision married to a color-blind woman.

QUESTION 6 Red-Green colorblindness is a X-linked recessive disorder. Huntington’s is an autosomal dominant disorder. Susan’s...

QUESTION 6 Red-Green colorblindness is a X-linked recessive disorder. Huntington’s is an autosomal dominant disorder. Susan’s father is color blind and has Huntington’s disease and is heterozygous for the Huntington’s allele. Her mother is normal and has no history of colorblindness or Huntington’s in her family. Her brother has developed Huntington’s but is not colorblind. Her husband Greg is healthy and has no incidence of either disorder in his family. Susan is not colorblind and has not yet be tested...

Red-green color blindness is due to an X-linked recessive allele in humans. A widow’s peak (a...

Red-green color blindness is due to an X-linked recessive allele in humans. A widow’s peak (a hairline that comes to a peak in the middle of the forehead) is due to an autosomal dominant allele. Consider the following family history: A man with a widow’s peak and normal color vision marries a color-blind woman with a straight hairline. The man’s father had a straight hairline, as did both of the woman’s parents. Use the family history to make predictions about...

1)Red-green color blindness is a sex-linked recessive trait in humans. Two people with normal color vision...

1)Red-green color blindness is a sex-linked recessive trait in humans. Two people with normal color vision have a color-blind son. What are the genotypes of the parents? A)XnXn and XnY B)XNXN and XNY C)XNXn and XNY D)XNXN and XnY 2)A poison interferes with the action of RNA polymerase II, but not RNA polymerase I or III. Which of the following is likely to be true of a cell exposed to the poison? A)production of tRNA would be stopped but not...

describe three autosomal dominant conditions in humans

Genetic Inheritance Patterns: Retinitis pigmentosa (RP) can be autosomal recessive, autosomal dominant, or x-linked

Genetic Inheritance Patterns: Retinitis pigmentosa (RP) can be autosomal recessive, autosomal dominant, or x-linked. Apparently the dominant forms are often less severe. Usher’s Syndrome is an autosomal recessive inheritance (i.e., you must get a copy of the defective gene from your Mom and one from your Dad). Autosomal means it is not carried on one of the chromosomes that determines sex. One website (http://www.emedicine.com/oph/topic704.htm) says that Usher’s Syndrome Type II has been mapped to chromosome arm 1qe. Usher’s Type II...

Scalloped (sd) wing is an X-linked recessive and ebony (e) body color is an autosomal recessive...

Scalloped (sd) wing is an X-linked recessive and ebony (e) body color is an autosomal recessive mutation in Drosophila. What proportion of scalloped, ebony colored females is expected in the F2 starting with a true breeding scalloped female which is wild type for ebony mating with a true breeding male mutant only for ebony. a. 1/16 b. 3/16 c. 0 d. 1/8 e. 1/32

a. Red green color blindness is a sex linked recessive trait. If a woman with normal...

a. Red green color blindness is a sex linked recessive trait. If a woman with normal vision whose father is colorblind marries a man with colorblindness. What would be the probability that they have a colorblind child? b. Two parents have ABO blood group genotypes. Which of the following blood types could not belong to one of their children? AB, B, O, A. c. A women who is a carrier for colorblindness marries a normal male. What is the probability...

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