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?

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

Q: Amelogenesis imperfecta (AI) is a disorder of faulty tooth enamel formation. It is inherited in an…

A: Amelogenesis imperfecta A faulty tooth enamel formation. Dominant traits Autosomal dominant allele…

Q: cance of color blindness in humans is due to a recessive gene located on the X chromosome X linked).…

A: Mother     ×      father            XXc                  XcY Progeny -      X Xc Xc XXc…

Q: X-linked ichthyosis is an X-linked recessive trait that manifests in part as dry, scaly skin…

A: If one allele is missing it is hemizygous. Heterozygous is the presence of two different alleles at…

Q: In this pedigree, affected individuals have a disease causing the inability to walk forward, called…

A: Genes are the hereditary unit of an organism. The genes have DNA (deoxyribonucleic acid) which code…

Q: The autosomal (not X-linked) gene for brachydactyly, short fingers, is dominant to normal finger…

A: Brachydactyly is an autosomal dominant trait. Normal = bb Affected = BB, Bb

Q: Hemophilia affects men much more than women. However, some women can be affected. The hemophilia…

A: Haemophilia is X linked recessive disease.  It is abnormal bleeding  disorder in which blood doesn't…

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 man with red-green color blindness marries a woman who is not color blind. They have 3 children,…

A: Color blindness is basically a genetic disorder which can be inherited from parents.These patients…

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: damage to the brain will always have lasting effects, but the timing of the damage is important. At…

A: Brain damage is one of leading cause of acquired disability and death in infants and children. Brain…

Q: Jane has type O blood. Her child has type O blood. George's blood type is homozygous B. Could George…

A: The ABO blood group system is present in human beings. There are four blood groups in the system,…

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: The most common form of colorblindness is a recessive, sex-linked hereditary con dition caused by a…

A: Color blindness is a genetic disorder which is caused by the inheritance of the mutated genes. The…

Q: An unaffected man and an unaffected woman mate and have a son affected with Kakamania. Which of the…

A: Answer: Chromosomal Inheritance is the process of transferring the genetic information from parents…

Q: Hemophilia A, a condition in which blood does not clot properly, is a recessive trait located on the…

A: INTRODUCTION: It is given that a woman who is heterozygous for hemophilia A (XX h) marries with a…

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: A man, Penoy, whose sister died in early childhood from a recessive lethal disease marries a woman…

A: In the given scenario, as the male survived beyond childhood but is a carrier of the disease, it…

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: Amelogenesis imperfecta (AI) is a disorder of faulty tooth enamel formation. It is inherited in an…

A: The trait shown is inherited both autosomal dominant and X-linked; the presence of the dominant gene…

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

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A: 50 percent chances.

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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: Review the process of autosomal dominant inheritance by coloring the following figures. In this…

A: According to the question, we have to review the process of autosomal dominant inheritance by…

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A: Alleles are the  alternative form of a gene that are located on the same locus of homologous…

Q: Constructing and Using a Pedigree Duchenne's muscular dystrophy (DMD) is a well known, lethal…

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

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: Bryan has albinism, an autosomal recessive trait, which means he is homozygous recessive for…

A: Ans: Albainism is an autosomal recessive disorder. For this disease to develop two copies of an…

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: Wilma and Wally have one male child who has been diagnosed withDuchenne muscular dystrophy, an…

A: Duchenne muscular dystrophy is a medical condition of muscular dystrophy which is caused by DMD gene…

Q: Amelogenesis imperfecta (AI) is a disorder of faulty tooth enamel formation. It is inherited in an…

A: Genes are the unit of inheritance that transfers traits from one generation to another. Genes coding…

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: Hemophilia is a disease inherited as a X-linked recessive trait while pattern baldness is controlled…

A: Haemophilia is a X-linked recessive trait, and baldness is an autosomal recessive trait. The…

Q: If a normal male reproduces with a heterozygous normal female, what are the expected genotypes and…

A: Hemophilia is a common hereditary coagulation blood disorder due to deficiency or reduced activity…

Q: Albinism is a recessive disorder where there is a lack of melanin. Andrea and her husband Claude…

A: Given information Albinism is a recessive disorder.  Andrea and Claude both have normal skin…

Q: Is this pedigree autosomal dominant, autosomal recessive, or X-linked recressive? Can you please…

A: Autosomal dominant and Autosomal recessive: The word autosomal refers to the "autosomes" which means…

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.