The an has normal vision and the woman is colorblind. What is the probability that their daughters will be colorblind? 75%, 25%, 100%, 0%, or 50%?

A man affected with HoHomania and a woman affected with HoHomania mate and have an unaffected son.  Which of the following mechanisms of inheritance can not be ruled out?  Choose all that can not be ruled out. Autosomal Dominant Autosomal Recessive Y-linked All of the mechanisms shown can be ruled out X-linked Recessive X-linked Dominant

Mary and Ron don't have albinism. However, is it possible for them to have a child with albinism? Explain. Stephanie has normal color vision. Her husband Chris also has normal color vision. They have a son that is color blind and a daughter that has normal color vision. What is the genotype of the mother, father, son and the daughter? Andy and Anne do not have polydactyl. Is it possible for them to have a child with polydactyl? Explain. When examining a pedigree chart, I notice that only males are affected. What does this tell me about the inheritance pattern? A man with blood type A marries a woman with blood type B. Their child has blood type O. What are the genotypes of the parents?

A gene that controls the ability to see red and green is located on the X chromosome but not on the Y chromosome. There is a recessive nonfunctional allele for this gene that can cause red-green color blindness if the person possessing it does not also have the dominant normal gene. Consider the case of a carrier mother who is heterozygous for the red-green vision gene and a father who has normal vision. Use XB = normal vision, Xb = color-blind vision. What is the chance the parents would have a color-blind boy? A color-blind girl? What about a girl or boy with normal vision? Redo the Punnett square for a carrier mother (XBXb) and a color-blind father (XbY). Do the chances of having color-blind children change? How?

Hemophilia is called "the royal disease" because many European royal families had members with the condition. Hemophilia is a recessive, X-linked disorder. Queen Victoria was unaffected by hemophilia, but was a carrier of the hemophilia gene (X X ). Suppose Queen Victoria's husband, Prince Albert, was affected with hemophilia (X Y). What is the percent probability that a son of Queen Victoria and Prince Albert would be unaffected by hemophilia? probability of unaffected son: What is the percent probability that a daughter or son of Queen Victoria and Prince Albert would be affected by hemophilia? probability of affected child: What is the percent probability Queen Victoria and Prince Albert would have two affected females? probability of two affected females: % % %

Achondroplasia,is characterized by difficulty converting cartilage to bone and thus results in shortened limbs. This trait is autosomal dominant. (A = achondroplasia allele; a = average height allele.) A husband and wife both have achondroplasia. The couple have a total 12 living children: 6 boys and 6 girls.  The husband is colorblind, which is an X-linked recessive trait, and the wife believes there is a chance she is a carrier of colorblindness, since that trait runs in her family. One of the couple’s daughters and three of their sons are colorblind.  (Xc = colorblindness allele; XC = normal color vision allele.) a) Please list all of the different gametes that the husband can produce. b) Please list all of the different gametes that the wife can produce.

Red-green colorblindness is inherited in an X-linked recessive pattern in humans.  A colorblind man and a woman with normal vision have four children, and one of them is a colorblind male.   Does the mother have to be a carrier in this case?  (Yes or No) What is the probability of the next child in this family being both colorblind and male?   No, 25% Yes, 25% No, 50% Yes, 50%

In humans, one type of red-green colorblindness (n) is sex-linked and recessive. A) A woman who is a carrier marries a man with normal vision. What is the chance of having color-blind daughters? Color-blind sons? B) A heterozygous woman and a color-blind man marry. What is the chance of having color-blind daughters? Color-blind sons?

A man who is an achondroplastic dwarf with normal vision marries a color- blind woman of normal height. The man's father was six feet tall, and both the woman's parents were of average height. Achondroplastic dwarfism is autosomal dominant, and red- green color blindness is X- linked recessive. How many of their daughters might be expected to be color- blind dwsrfs?         half     one out of four     three out of four     none

Red-green colour blindness is a sex-linked trait. Red-green colour blindness (Xrg) is the inability to distinguish between red and green colours. The Xrg allele is recessive to the normal X-linked allele.A normal woman has a father who has red-green colour blindness. She had a child with a man who does not have red-green colour blindness.What is the probability they will have a son with red-green colour blindness? Select one: a. 0 b. 0.13 c. 0.25 d. 0.50