A couple, who are both normal, have a daughter who is albino and a son who is normal. a) what is the probability that their normal son is a carrier of the albinism gene? Show your work. b) the couple wants to have 3 more children; what is the probability that they will have 3 normal girls? Show your work.

Q: According to the pedigree below, what mode of inheritance is occurring? A)Autosomal dominant…

A: It is a chart or diagram that exhibits the presence or absence of a trait that can be related to the…

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: Marly is doing a paternity test to determine who could be her father. She is going just off of word…

A: There are four types of blood group A,B,AB and O. These blood groups can have following genotypes…

Q: Because Elsa has received a confirmed diagnosis of beta-thalassemia major, which of the following…

A: Beta thalassemia is an inherited blood disorder. This means it is passed down through the parent’s…

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

A: 50 percent chances.

Q: Brown hair is determined by an autosomal dominant allele: “B”. Blond hair is determined by the…

A: Meiosis is a reductionak division. It reduces the chromosome number to halves. The B allele is…

Q: a man has simpson syndrome, an addiction to certain television series. his wife does not have this…

A: ss x Ss Father with Simpsons syndrome x carrier mother   S s s Ss ss s Ss ss 50%…

Q: In a well-publicized paternity case, the following facts were determined: the mother, a beautiful,…

A: Child is type O and mother is type A than father should be :-

Q: a) What is the genotype of the lady? b) What is the genotype of the man?

A: Ans-a) Possible lady 's Genotype will be- AA, AO.

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: If a Mother's genotype is IAi and her Daughter's genotype is ii and the mother claims a man who is…

A: Note: In this question, there is no part c that could be used to answer part d. So we will solve the…

Q: Two parents who do not have a condition have a daughter who has the condition. Which of the…

A: Gregor Mendel recognized that there are two hereditary factors. The terms gene and allele were yet…

Q: If someone has Marfan syndrome, what are their genotypes? If that person has children who do NOT…

A: Marfan syndrome is a systemic connective tissue disorder. It is caused by the mutation of…

Q: Trisha (mother of the baby) Charlotte (baby) Ronnie (Trisha's husband) Johnny (the grad student)…

A: I) Origin of bombay blood group  is in Mumbai in 1952.

Q: If both parents carry one copy each of the mutation that causes Huntingtons , what are the odds that…

A: Huntington disease is the neurodegenerative disorder, it causes breakdown of nerve cells in the…

Q: Suppose gene B is X-linked and is embryonically lethal when homozygous or hemizygous recessive. A…

A: Let us first discuss the terms used in the question, Homozygous:- A condition when two copies of an…

Q: Hemophilia is a blood disorder which is sex-linked. A woman carrier has children with a normal man.…

A: In this question, we have to determine the chances for girls and boys with haemophilia .

Q: man and a woman have a child with cystic fibrosis. Neither parent has cystic fibrosis. How could…

A: Cystic fibrosis is an inherited life-threatening disorder that affects the lungs and digestive…

Q: Hemophilia is determined by genes on the X chromosome in humans. Assume that a phenotypically normal…

A: Hemophilia is an X-linked recessive condition defined by the inability to clot normally due to a…

Q: Hemophilia A is an X-linked trait where blood clotting is affected due to a mutation in a clotting…

A: Hemophilia is a genetic disorder which slows down the process of blood clotting. It is X linked…

Q: Jan and Michael are both carriers for the cystic fibrosis allele. If Jan and Michael have five…

A: Introduction Cystic fibrosis (CF) is a genetic disorder, which means it is transferred from…

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: A patient has two parents with Huntington's disease. They may not have inherited this autosomal…

A: The Huntington's disease is a very rare condition and is an inherited disease which results in…

Q: A heterozygous woman with Type-A blood, and a man with Type-O blood, have a child. What are the odds…

A: All people and numerous different primates can be composed for the ABO blood group. There are four…

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…

Q: Boe is normal and his wife is not color-blind, she is a carrier. Which of the following children…

A: Given  Father is normal Mather is carrier for colour blind trait.    Colour blindness  It is a X…

Q: In fruit flies, yellow body is a sex linked recessive allele. The dominant allele is dark bodied. If…

A: A bleeding ailment called haemophilia causes blood to not clot normally. Blood contains a variety of…

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: Alice has type A blood and her husband Mark has type B blood. Their first child, Amanda, has type…

A: Although the phrases genotype and phenotype may look similar, they are very different from one…

Q: what is the probability that a couple (both heterozygous for the same recessive mutation) will have…

A: “Homozygous defect” takes place If the type of “deleterious mutation” is the same in both copies of…

Q: What causes most of the phenotypic abnormalities in someone with Down's Syndrome? A) They have…

A: Aneuploidy is the condition in which abnormal number of chromosomes are seen in the cell.Normally…

Q: Unattached earlobes (E) are dominant over attached earlobes (e) [Figure (a) and (b)]. If a woman…

A: Introduction  Sir Gregor Mendel is known as the Father of Genetics. He was the pioneer scientist who…

Q: Jan and Michael are both carriers for the cystic fibrosis allele. If Jan and Michael have three…

A: Fraternal or dizygotic twins are produced when two different ova are fertilised by 2 different…

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.