Albinism in humans is autosomal and fully recessive to normal color. A couple, who are both normal, have a daughter who is albino and a son who is normal. What is the probability that their normal son is a carrier of the albinism gene?

Q: Farmer Brown had two hogs, Olga and Hank.  Olga and Hank were normal, healthy hogs, but whenever…

A: Ogla and Hank must be both heterozygous for the condition. That is why they are producing some…

Q: The following pedigree shows the inheritance of a human disorder. Affected individuals are shown…

A: A pedigree helps us to determine the inheritance of a trait across generations in a family.

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: The allele for albinism is recessive to the allele for normal skin pigmentation. All individuals who…

A: An inherited disorder that presents with little or no melanin production, which results in either…

Q: Sickle cell anemia is a blood disorder that is expressed with incomplete dominance. The homozygous…

A: Genes are generally referred to as the basic unit of heredity. They are a part of DNA and are…

Q: For the following diseases with their potential pedigree, mode of inheritance and the responsible…

A: Pedigree B, Autosomal dominant, FGFR3 geneAchondroplasiaPedigree B, Autosomal dominant, Huntingtin…

Q: In a cross between an individual with Huntington disease and an unaffected individual, what are the…

A: Huntington disease is a progressive brain disorder that causes uncontrolled movements, emotional…

Q: Two affected daughters and two normal sons are born to an affected male and a normal female. Each of…

A: The pedigree analysis helps us identifying the mode of inheritance of a particular disease and it…

Q: Hemophilia is an X-linked recessive disorder and blood type is autosomal.  If two healthy parents,…

A: Introduction  X linked inheritance is based on the sex chromosome (X chromosome). This inheritance…

Q: Cystic fibrosis is a disease that is passed down through the generations. The recessive alleles for…

A: Genes carry the traits from one generation to another. Genes that code for different forms of a…

Q: cell anemia is inherited as an autosomal recessive trait. For the following families, hine the…

A: Sickle Cell anaemia is an autosomal recessive disease which means that two alleles are required to…

Q: Neurofibromatosis-1 (NF1) is an autosomal dominant disorder where tumours form in the base layer of…

A: The probability is 1/4

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: There are two traits not shown in the pedigree: albinism (autosomal recessive) and Marfan syndrome…

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

Q: In humans, hemophilia is a sex-linked recessive disease, and the gene is located on the X…

A: Hemophilia is a sex-linked recessive disease. This means that in order to produce a diseased…

Q: Is this pedigree dominant or recessive. Which best defines this pedigree Autosomal or sex-linked?

A: Introduction :-  A pedigree is a diagram of family history that uses standardized symbols for…

Q: Hemophilia is a recessive sex-linked trait in humans.  Sickle-cell anemia is a recessive trait on an…

A: Hemophilia is X linked recessive disorder in which blood continuously flows because of absence of…

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: The pedigree below represents the inheritance of a rare genetic disorder (members joining the…

A: The answer is written in explanation box below:Explanation:…

Q: Hemophilia is an X-linked recessive gene. A normal woman who is a carrier for hemophilia marries a…

A: Hemophilia is a disorder in which blood can’t clot properly, excessive bleeding (external and…

Q: Hypophosphatemia is a dominant genetic disorder caused by a deficiency of phosphates in the blood.…

A: X-linked genetic disorders can either be recessive or dominant. In this example we can conclude that…

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: Assume that color blindness is a recessive character on the X chromosome. A man and woman with…

A: Introduction  Inheritance referred to the transmission of character/traits in the form of gene from…

Q: 22. State how many children or percent that can be normal pigmented with dwarfism (A_D_). 23. State…

A: Autosomal inheritance means the inheritance or passing of the genetic trait from parents to…

Q: Refer to the pedigree below which shows inheritance for achondroplasia (dwarfism), a dominantly…

A: The Pedigree is not skipping  the generations and males and females are equally having affected with…

Q: Acatalasia is caused by a rare autosomal recessive gene. In heterozygous condition catalase activity…

A: Acatelasia is a genetically inherited disorder that causes lowering or absence of production of the…

Q: The attached image is a pedigree of a family with a history of sickle cell anemia (the individuals…

A: Sickle cell anemia is a genetic condition caused by a mutation in the gene that codes for…

Q: Albinism is inherited through a recessive allele (a). Juan has normal skin color. His Mom and Dad…

A: Genotype means the alleles constituting the genetic composition and responsible for the expressing…

Q: Piebaldism is a skin condition that causes an infant to be born with white birthmarks due to a…

A: It is an autosomal dominant genetic disorder. It is mainly due to the absence of melanocytes of the…

Q: A man and woman are both heterozygous for the recessive allele that causes cystic fibrosis. What is…

A: We all know that cystic fibrosis is an autosomal recessive disorder that means the genotype of the…

Q: The second pedigree involves albinism, an autosomal recessive trait.  A couple has a son with normal…

A: A series of genetic illnesses known as albinism (OCA) occur when the pigment melanin is produced…

Q: Using just the information on this pedigree, is Huntington’s disease caused by a dominant allele or…

A: As per the honor code, we answer only three sub-parts at a time. So, we are answering the first…

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: Hypophoshatemia is a dominant genetic disorder caused by deficiency of pho[hates in the blood.…

A: The pattern of inheritance in question involves a genetic disorder related to phosphate deficiency…

Q: A normal female and a male with sickle cell anemi and three with sickle cell anemia. (iii) (iv) Two…

A: Sickle cell anemia and sickle cell disease is an inherited disorder that occurs due to a faulty…

Q: A man with blood type O (genotype ii) has a father with blood type A and a mother with blood type B.…

A: In human blood group typing, the ABO system of blood grouping is used.  The Blood groups are A, B,…

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: Cystic fibrosis (CF) is an autosomal recessive trait. A three-generation pedigree is shown below for…

A: Given: Cystic fibrosis (CF) is an autosomal recessive trait. Normal allele =  F      CF mutant…

Q: In a parental cross for an autosomal MOI, the ratio (Disease phenotype):(WT phenotype) differ for…

A: The alleles are the alternative forms of a gene that are located in on the same locus of a…

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.