In man, muscular dystrophy is a condition in which the muscles waste away during early life and may result in a shorter life expectancy. It is due to a sex-linked, recessive gene. A certain couple has five children – three boys (ages 1yr, 3yrs, and 10yrs old) and two girls (ages 5yrs and 7yrs old). The oldest boy shows the symptoms of this disease. You are their family physician and they come to you for advice. What would you tell them about the chances of their other children developing the disease?

Q: A young lady requested pre-marital genetic counselling because her sister had died in infancy of…

A: Gangliosidosis refers to a group of lipid storage illnesses caused by the buildup of lipids called…

Q: a. What type of inheritance is shown in the pedigree? 1 II 1 2 4 II 1 2 3 4 5 IV 1 Identify the…

A: Pedigree is a chart that represents members of a family affected by a genetic trait. Here, squares…

Q: Create a hypothetical person and situation as a real life example to illustrate your position. Who…

A: Z is a 31-year-old male and he wishes to marry. He is the only child of his parents. His fiancé B…

Q: What kind of sight is expected in the children from this marriage?

A: Daltonism is also known as deuteranopia which is a rare form of color blindness. In this form, the…

Q: The pedigree below shows a family affected by a disease. Assume that the individuals marked with an…

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

Q: which genetic disorder matches below descriptions. extra 21st chromosome attaches to chromosome 14.…

A: Genetic disorder is defined as the disease caused by the abnormality in the genome of an organism.…

Q: Hemophilia is another example of a X-linked disease caused when a recessive allele (Xh) is…

A: Hemophilia is a disorder where blood clots do not form normally which leads to excessive bleeding…

Q: which genetic disorder matches below descriptions deltetion of part of the Parm of chromosome 5.…

A: It refers to a health problem that can be caused by one or more abnormalities in the genome or by a…

Q: Tay Sach's disease results from a mutation in the hexosaminidase A gene.  Heterozygotes are normal.…

A: Correct option is recessive lethal .

Q: Marfan syndrome is a disease caused by a rare dominant allele of the fibrillin-1 gene. Fibrillin-1…

A: Marfan syndrome refers to the genetic disorder related to connective tissue characterized by tall…

Q: In a paternity suit, a woman with type O blood claims that a man with type AB blood is the father of…

A: ABO blood group is a case of multiple alleles and co-dominance. When there are more than two alleles…

Q: A possible explanation for the increased incidence of Tay-Sachs disease among Ashkenazi Jews is

A: Tay Sachs is a rare autosomal recessive disorder that causes mental and physical disabilities…

Q: A woman knows that her mother is a carrier of Kartagener’s syndrome (an autosomal recessive…

A:

Q: Hemophilia is a sex-linked recessive trait in humans. If a father and a son are both hemophiliacs,…

A: Haemophilia is an sex-linked recessive disorder. As male is hemizygous for chromosome so one copy of…

Q: Ichthyosis is a rare X-linked recessive disorder that is characterized by scaling of the skin around…

A: X linked recessive disorder or inheritance implies that their is a mutation in the genes of X…

Q: Consider a rare disease that is X-linked recessive. A normal man is married to a normal woman with…

A: Genetic disorders related to mutations in genes on the X chromosome are referred to as X-linked…

Q: Jekyll-Hyde Afflicted Spider Curse Afflicted Jekyll-Hyde/Spider Curse Human 2. II 2 III 3.…

A: Pedigree charts are very useful for determining if the disease in question is autosomal dominant or…

Q: Imagine that you are a genetic counselor, and a couple planning to start a family comes to you for…

A: During gamete formation, two alleles of a gene segregate into different gametes. This is based on…

Q: A couple intends to have children but consults a genetic counselor because the man has a sister with…

A: PKU or Phenylketonuria is a genetic disorder. It is a metabolic disorder in which there is a…

Q: A man with X-linked color blindness marries a woman with no history of color blindness in her…

A: Genetics is the branch of biology that deals with genetic material like DNA, RNA, inheritance.…

Q: In X-Linked Dominant disorder, a gene responsible for a genetic disorder is located on the X…

A: X-linked dominant inheritance is the genetic conditions associated with mutations in genes on the X…

Q: Y-linked Amelogenesis imperfecta (A), a congenital disorder that affects the formation of the teeth…

A: Given: Amelogenesis imperfecta, Y-linked (A) congenital disorder. Hypophosphatemia (H) X-linked…

Q: A man is a homozygous for a disease. He marries a woman who is heterozygous for the disease. A son…

A: In genetics the genes act as a hereditary unit for inheritance. The genes contains the alternative…

Q: Which of the following inheritance patterns was observed, in the experiments of Alfred Hershey and…

A: Alfred Hershey and Martha Chase, it was clearly proved the genetic material that passed from parents…

Q: man has a child with a woman who does not carry the dominant disease allele, what is the probability…

A:

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: three children. What is the probability that one their children will be normal (unaffected) and two…

A: Autosomal recessive mutation leads to autosomal recessive disorder. This will occur when you…

Q: oman homozygous for normal height, with freckles, almond-shaped eyes, small nose, and Type A blood,…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

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: Haemophilia is an X-linked recessive disorder. If a woman is a carrier for haemophil. and has a…

A: Hemophilia is basically an inherited bleeding disorder in which the blood doesn't clot properly,…

Q: There are six types of agglutinogen named C,D, E and c,d,e.the first three are dominant and last…

A: In blood typing, antigens on the surfaces of red blood cells (RBCs) are known as agglutinogens.…

Q: In humans, Cystic Fibrosis is caused by a recessive allele on chromosomes 7. A person must inherit…

A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…

Q: Match the genetic disorder to the descriptions below: Edward Syndrome Jacob Syndrome Patau Syndrome…

A: Genetic disorders are caused by mutations in the genes and such mutations can be single-gene,…

Q: Six months pregnant, an expectant mother had a routine ultrasound that showed that the limbs of the…

A: Dwarfism --Most common type of dwarfism is achondroplasia. 97% of achondroplasia cases are caused by…

Q: In 1-3 sentences each define the follwing terms:   genotype, phenotype, homozygous, heterozygous,…

A: Sir Gregor Mendel was a priest and a teacher who did the famous hybridization experiment on garden…

Q: Huntington’s disease, a neurodegenerative genetic disorder that typically becomes noticeable in…

A: In genetics the genes control the hereditary units of life. The state for the genes to be present…

Q: couple has one daughter with Tay-Sachs disease and three other unaffected children. Neither the…

A: Tay-sachs disease appears after birth due to deficiency of enzyme beta-D-N -acetyl…

Q: Autosomal Dominant is a mutation in one copy of the gene. It is inherited from an affected parent or…

A: One of the ways a genetic trait or a genetic condition can be inherited. In autosomal dominant…

Q: Hutchinson-Gilford syndrome, is an extremely rare, progressive genetic disorder that causes children…

A: Mutations in the LMNA gene cause Hutchinson-Gilford progeria syndrome. Here, we have to select the…

Q: DNA sequencing of your own two β-globin genes (one from each of your two Chromosome 11s) reveals a…

A: I should be worried since presence of an abnormal beta globin chains may be an early indicator of…

Q: Cystic fibrosis in humans is caused by mutations in a single gene and is inherited as an autosomal…

A: Cystic fibrosis is caused due to mutation in gene that codes for the protein Cystic fibrosis…

Q: Marfan syndrome is a rare inherited human disorder characterizedby unusually long limbs and digits…

A: Marfan syndrome is a genetic disorder of connective tissues. In this, the connective tissues present…

Q: Hereditary hemochromatosis is an autosomal recessive genetic disorder that causes the body to absorb…

A: Within organisms, many various forms of mutations occur, and depending on the type of mutation, it…

Q: Hereditary hemochromatosis is an autosomal recessive genetic disorder that causes the body to absorb…

A: Hereditary haemochromatosis type 1 (HFE-related Hemochromatosis) is a hereditary condition defined…

Q: Consider an autosomal recessive disease in which an individual must inherit two recessive alleles to…

A: Given,disease phenotype is a recesssive trait. Option 4 is the answer.Probability of having a…

Q: A man with hemophilia (X-linked recessive) has two kids: a girl who has a normal phenotype, and a…

A: Hemophilia (A and B) is an X-linked recessive disorder.  The genes that are linked to hemophilia…

Q: Tay-Sachs disease most likely demonstrates what type of inheritance? Pedigree information…

A: Mutated genes are located on the non-sex chromosome and the traits for disease get transferred…

Q: The Hulk wants to have children with Black Widow. However, the Hulk is worried that his super genes…

A: It is given that Hilk has super power with genotype nn. This suggests that super power traitbis an…

Q: Female with Short Hair Male with Long Hair Male with Short Hair Which of the following is a…

A: The alleles are generally of dominant and recessive type and some other forms like codominant are…

Q: In humans, Pseudohypertrophic Muscular Dystrophy is a condition in which the nerves waste away…

A: In humans females possess two X chromosomes and males possess one X chromosome and one Y chromosome.…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.