Achondroplasia, which 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) Draw a Punnett square that illustrates the GENOTYPES of all of the children that could be CONCEIVED by this couple.  b) What fraction of all of this couple's LIVING/SURVIVING children will have achondroplasia AND simultaneously be colorblind?

Q: Hemophilia is a typical example of Sex-Linked Inheritance. If the man is hemophilic and marries a…

A: Haemophilia is also known as bleeder's disease. This disease was first studied by John otto in the…

Q: A woman develops Huntington's disease and already has 3 children. What is the chance that the mother…

A: Huntington’s disease or Huntington's chorea is a muscular and mental disorder. There is a gradual…

Q: A woman without red-green colorblindness and with a normal chin, whose mother was colorblind,…

A: Genetic inheritance patterns come in two flavors: autosomal dominant and sex-linked recessive. The…

Q: Please explain why sex linked recessive traits are inherited by the son from his mother. If a mother…

A: Sex Linked Recessive Traits   The disease appears almost always in males whose mothers are…

Q: Achondroplasia, which is characterized by difficulty converting cartilage to bone and thus results…

A: Hhsbanf is colorblind i.e XcY  Wife is carrier as their son and daughter both are affected .i.e XCX…

Q: Bob and Joan know from a blood test that they are each heterozygous (carriers) for the autosomal…

A: A group of disorder that affects the hemoglobin is said to be sickle cell disease. An individual…

Q: A couple is both heterozygous for the autosomal recessive disease cystic fibrosis (CF). What is the…

A: Autosomal recessive inheritance pattern is a type of inheritance pattern in which the disease is…

Q: For a recessive X-linked mutation, such as colorblindness, explain the pattern of inheritance from…

A: Recessive X-linked mutation can be defined as the type of mutation which occurs in the X chromosome…

Q: Cystic fibrosis is a genetic disorder that results in the build-up of thick mucus in the lungs and…

A: Cystic fibrosis is a genetic disease caused by abnormalities in the CFTR gene. As a result, an…

Q: The male is heterozygous for Huntington’s disease and homozygous dominant for Tay-Sachs. The female…

A: Male = Hh TT Female = hh Tt

Q: A form of hemophilia is caused by a sex-linked (X-linked) recessive gene. A phenotypically normal…

A: 50 percent chances.

Q: Frekles are inherited as an autosomal dominant trait. Red hair is inherited as an autosomal…

A: Autosomal dominant shows inheritance when only one of the two alleles is intact dominant state and…

Q: Wilson’s disease is an inherited disorder in which there is too much copper in the body’s tissue. It…

A: A pedigree chart is a graphic that depicts the incidence and emergence of phenotypes of a certain…

Q: Considering a common autosomal recessive trait: (Read each statement carefully. Select all of the…

A: Autosomal recessive: In this type the gene or condition is recessive type which means expressed in…

Q: Albinism is a recessive trait. Two individuals who both have normal pigmentation have one child out…

A:

Q: Mark has an autosomal recessive condition called sickle cell anemia, a serious blood disorder that…

A: Sickle cell anemia is an autosomal recessive disorder which ne it can only expression if present in…

Q: Greg and Susan have Nail- Patella syndrome (NPS). NPS is an autosomal dominant. Greg has a blood in…

A: Introduction  The nails, knees, elbows, and pelvis are abnormal in people with nail-patella…

Q: Albinism is an autosomal recessive condition characterized by absence of melanin pigment from the…

A: Albinism is a group of genetic disorders characterized by a lack of melanin, the pigment that gives…

Q: A couple who is heterozygous for simple recessive albinism (no epistasis here) plans on having 2…

A: The parents of a child having autosomal recessive albinism have one copy of the mutated gene. The…

Q: A man has six digits on each hand and foot (an autosomal dominant trait).  His wife and first…

A: A condition in which an individual has more than 5 digits is known as polydactyly. Polydactyly is an…

Q: Joe, who has the sex chromosomes XY, has classic hemophilia, an X-linked recessive disease. Classify…

A: Haemophilia is a X linked recessive trait. It is encoded by single gene. XH encodes normal…

Q: A man and a woman are both carriers for cystic fibrosis (an autosomal recessive allele).  Neither of…

A: Introduction Cystic fibrosis is a life-threatening genetic disease that affects the lungs and…

Q: Albinism is an autosomal recessive disorder. If a non-carrier normal male mates with an albino…

A: Given: Albinism is an autosomal recessive disorder. Let, Normal person (not having albino) - AA…

Q: Cystic Fibrosis is an autosomal recessive disorder. A couple are both carriers of the recessive…

A: Cystic fibrosis is an inherited illness which affects the lungs and digestive system. The body…

Q: A couple who are a carrier of sickle-cell disease with blood type A for the female and type B for…

A: Sickle cell disease is a blood cell disorder in which red blood cells are misshapen ( sickle shape…

Q: Recessive hemophilia, x-linked. The man has it, and his wife is a carrier. Draw a Punnett square to…

A: Given: Hemophilia is a recessive, x-linked disorder. Man has it (XhY) Wife is a carrier (XHXh) (XhXh…

Q: Muffy, a color blind female with blood type A (heterozygous to type O) is married to Biff, who is…

A: Given: Muffy, a color-blind female with blood type A (heterozygous to type O), married to Biff, who…

Q: Below is a pedigree chart for a family that has a history of Alkaptonuria.   Individuals infected…

A: Pedigree analysis is a method to identify the inheritance of a genetic trait across generations.…

Q: A couple is going to have a baby. They are concerned about sickle cell anemia, which results from…

A: Sickle cell anemia results from having the homozygous recessive combination of the sickle cell gene…

Q: A woman is color blind (an X-linked, recessive trait).  What are the chances that her sons will be…

A: Given that color blindness is a X linked recessive trait.  X-linked alleles require a specific…

Q: A color blind (X linked recessive) female marries a normal male. What percent of her daughters will…

A: Color blind is defined as a condition where there is an inability to differentiate between shades of…

Q: Rr female Rr male

A: It is given that R allele encodes normal phenotype. It is dominant over r allele.  RR and Rr encode…

Q: Your brother has an autosomal recessive disorder, while you are unaffected. Neither one of your…

A: Question - Your brother has an autosomal recessive disorder, while you are unaffected. Neither one…

Q: Tongue rolling is an autosomal dominant trait. What would be the phenotype of a person who is…

A: Those genes which are present in autosomal Chromosome are known as autosomal trait

Q: A couple with the following blood types: the man has type AB and the woman has type B, discover…

A: The blood grouping system is seen as per the rule of multiple alleles and co-dominance. It is given…

Q: The pedigree shows a family with a 100% penetrance, X-linked recessive disease. What's the chance…

A: Within the case of an X-linked recessive disease, a male (XY) will show disease symptoms in the…

Q: Mrs. and Mr. Bond have five children, Janine, Jaliyah, Joliette, Jelani and James Jr. Mr. Bond…

A: Given information  Fragile X syndrome is an X-linked dominant disease. Mr. Bond has this disease…

Q: Red/green colorblindness X-recessive pedigree

A: Answer: X-linked recessive pedigree is a pedigree chart of a family in which the disease is transfer…

Q: Hemophilia is a sex-linked blood clotting disorder (h). A non-hemophilic man marries a woman who…

A: Step 1 Genetic disorders are defects that are caused by a genetic mechanism like mendelian genes,…

Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.