Red-green color blindness is an X-linked recessive trait in humans. Polydactyly (extra fingers and toes) is an autosomal dominant trait. Martha has normal fingers and toes and normal color vision. Her mother is normal in all respects, but her father is color blind and polydactylous. Bill is color blind and polydactylous. His mother has normal color vision and normal fingers and toes. When answering the given question, consider that the answers include the proportions of only some of the possible phenotypes other phenotypes are also expected to occur but are not included. If Bill and Martha marry, what proportions of children with specific phenotypes would they be expected to produce? 1/8 color-blind girls with normal fingers, 1/4 boys with normal vision and polydactyly 1/4 girls with normal vision and polydactyly, 1/8 boys with normal vision and polydactyly 1/8 color-blind girls with polydactyly, 1/8 boys with normal vision and normal fingers 1/4 color-blind girls with normal fingers, 1/4 boys with normal vision and polydactyly

Amanda Sefton (Daytripper) has normal fingers and toes and normal color vision. Her mother is normal in all respects, but her father is color blind (X- linked recessive) and syndactylous (autosomal dominant). Kurt Wagner (Nightcrawler) is color blind and syndictylous. His mother has normal color vision and normal fingers and toes, but he didn't know his father. As their genetic counselor, answer the following questions based on Kurt and Amanda marrying and starting a family. What is the probability of having a child that has syndactyly? (Enter your answer as a decimal; Example = 0.8782)

Color blindness is an X-linked recessive disease. A female and a male with normal vision have 4 children. The phenotypes of the children are listed below: 2 Colorblind males, 1 normal vision female, one normal vision male. Given these results, the female must be a carrier for colorblindness. True False

Red-green color blindness is an X-linked recessive disorder.  If Allison is heterozygous (a carrier), and her husband, Michael, is NOT colorblind. What is the chance that their male children will be colorblind? (Note: you are calculating the probability for their MALE children only, in other words if they have 1 male child, what is the probability that he will be born with the disease?)     0%     25% or 1/4     50% or 2/4     75% or 4/4     100% or 4/4

Red-green color blindness is an X-linked recessive disorder. If Allison is heterozygous (a carrier), and her husband, Michael, is NOT colorblind. What is the chance that their female children will be colorblind? (Note: you are calculating the probability for their FEMALE children only, in other words if they have 1 female child, what is the probability that she will be born colorblind?)     0%     25% or 1/4     50% or 2/4     75% or 3/4     100% or 4/4

Tanya has a family history of colorblindness but can see colors, and her partner Tim is affected by colorblindness. Colorblindness is an X-linked recessive condition with the alleles: XB (unaffected and dominant) and Xb (affected and recessive). Tanya’s mother was affected, but her father was not. Her partner Tim is also affected. What is the probability that if Tanya and Tim had a daughter that she would be affected? How about a Son?

In humans, blue eyes are inherited as a recessive autosomal trait and color blindness is an X-linked recessive trait.  A woman with blue eyes and normal color vision (her father was colorblind) marries a man who has normal color vision.  The man has brown eyes, but his mother had blue eyes.  What is the probability that this couple will have a son with brown eyes?  What is the probability that this couple will have a color blind son with blue eyes?

Red-green color blindness is inherited through an X-linked, recessive allele (b). Two parents, Fred and Ginger, have normal vision. They have two daughters, Takiyah and Kelly, who also have normal vision, and a color-blind son, David. 3. Daughter Kelly has a color-blind son, Kevin. Daughter Takiyah has five sons, all with normal vision. What are the genotypes of all the individuals? Show all your work! Fred Ginger David Takiyah Kelly Kevin Takiyah's five sons If Kelly marries a man with normal vision, what is the probability that she'll have a color-blind son? a color-blind daughter?

Red-green color blindness is inherited as an X-linked recessive (Xc).  If a color-blind man marries a woman who is heterozygous for normal vision, what would be the expected phenotypes of their children with reference to this character?  In your answer, specify in your phenotype descriptions the gender of the children.  (For example, don’t just say 75% of the children would be colorblind – you would instead say 100 % of the daughters would be colorblind and 50% of the sons would be colorblind.  Note that this is not a correct answer; it is just to give you an idea of how to explain the correct phenotypes of the cross.)___

Geneticists are concerned about three different genetic conditions present within their family.  Achondroplasia  is an autosomal dominant genetic disorder that results in short-limbed dwarfism. (A = achondroplasia allele; a = average height allele).  Red-Green Color blindness is an X-linked recessive genetic disorder (Xc = color blindness allele; XC = normal color vision allele).  The 7-year-old son has an autosomal recessive form of deafness.  (h = deafness allele; H = normal hearing allele.)    All three family members were karyotyped, and additional genetic testing was performed to determine the chromosomal location of the genes being studied. The figures below show the karyotypes of the mother and father with respect to the chromosomes containing the three genes mentioned above. Question: The couple’s 7-year-old son has all three of these genetic conditions (achondroplasia, color blindness and deafness). Taking into consideration the genotypes of his parents, what is the complete…