Huntington disease is a neurodegenerative disease that appears in affected people late in life. It is a dominant trait controlled by a single gene and the dominant Huntington allele is rare. Suppose that Joe is diagnosed with Huntington disease. He is surprised because both of his parents are over 70 years old but do not have the disease. He talks to his parents about this and finds out that there is no history of Huntington disease on his father’s side, but his maternal grandfather and one of his mother’s aunts, who had both died before he was born, had suffered from Huntington disease. a. Does this story represent variable expressivity, or incomplete penetrance? b. Deduce, as much as you can, the genotypes of Joe, his mother, his father, and his maternal grandfather .

Q: Which of the following statements correctly describes the termns monohybrid cross and dihybrid…

A:

Q: estions below all refer to the following pedigree. The locus for allele D/d determines how cilia on…

A: It is evident that the trait is not sex-linked because:-   In the case of Y-linked disorders, only…

Q: 5. Show the cross of a red eyed female (heterozygous) and a red eyed male. What are the genotypes of…

A: Given: Red eyes female is heterozygous Male is red eyed. The disease is X linked. The Punnett square…

Q: QUESTION 10 Hypertrichosis is an unusual disease, but it is not a fatal disorder in either the…

A: Autosomal dominant is a pattern of inheritance where a single copy of a mutated gene from one parent…

Q: Why do identical twins become increasingly different over time? In your response, use the w s:…

A: Q1) Theidentical twin though have developed by the cleavage of same fertilized egg. Also called as…

Q: In a heterozygous state, being dominant implies that the dominant allele: has a chemical…

A: Alleles:  Genes that occupy corresponding positions on homologous chromosomes and controls the same…

Q: A woman who is eight (8) weeks pregnant requests a direct test for Huntington’s disease on her…

A: Huntington's disorder is an autosomal dominant genetic disorder. It causes the breakdown of the…

Q: out 1 in 1 d as an pused club ation, but person wh probabilit

A: In some cases, clubfoot can be associated with other abnormalities of the skeleton that are present…

Q: Now having this chart can you answer these questions? Codominance pattern of inheritance: Two…

A: The ABO blood group system consists of 4 types of blood group – A, B, AB, and O.

Q: The father of three sons and two daughters begins to show symptoms of Huntington's disease. What is…

A: The mode of inheritance is a pattern of obtaining parentral alleles  or genes to the offsprings. The…

Q: 1. Both parents have one dominant allele and one recessive allele. This means that they are…

A: Huntington's disease is a rare genetic condition that causes nerve cells in the brain to decompose…

Q: 2. Lucy has fair (light) skin, red and wavy/curly hair. Use the model of her parents' genes above to…

A: The process of inheritance involves the transmission of genetic information from parents to progeny.…

Q: Inherited cancers are due to mutations in ________ cells. They are/are not passed on to offspring.…

A: Cancer is a disease where some cells of the body divide uncontrollably and they can also infiltrate…

Q: In humans the absence of a cleft chin is dominant to the pres individuals, both of whom are…

A: In genetics, traits are often determined by the interplay of dominant and recessive alleles. One…

Q: hello, there’s this question I need help on but I don’t want no google help with! I need to learn…

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

Q: A male dog is a carrier for the autosomal recessive disorders centronuclear myopathy (Y/y) and von…

A: Centronuclear myopathy and von Willebrand disease is an autosomal dominant disease and is a single…

Q: 1) having dimples D is dominant over not having dimples d. A dimples woman whose father had no…

A: Introduction  Dominant refers to an allele that masks the effect of a recessive allele when both are…

Q: Fill in ALL the charts AND answer every question/fill in the blank. Make sure it is ALL accurate and…

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

Q: Fill in the blanks with the correct terms. Sex-linked traits have genes located on the chromosomes.…

A: Sex chromosome: This chromosome determines the sex of an individual. Humans have two sex…

Q: Gli3 and distal Hox gene expression Gradual reduction in distal Hoxd dosage Ноxd13 +/+ +/- +/+ +/-…

A: Hox genes specifies the identity of the limb region. It also sepcifies whether a particular…

Q: A male is affected by a rare disease "Z" (autosomal dominant). Disease Z shows 40% penetrance. If…

A: Genetics is the branch of biology that deals with inheritance and variation. A gene is a section of…

Q: 5. If a protein called phenylalanine builds up in the body, the person has a disease called…

A: INTRODUCTION Phenylketonuria This defect is caused due to the damage in the gene which produce…

Q: 2. Applying: After completing your biology class, you feel like you better understand genetics. Then…

A: Introduction Autosomal dominant is a pattern of inheritance for a trait or disorder that is caused…

Q: 4. Huntington's disease affects the muscles and nervous system. People who have Huntington's'usually…

A: Huntington's disease is a disease which affects the neurons in the brain, leading to their…

Q: 1. One individual has blood type AB positive, while another individual has blood type O positive,…

A: Sickle cell anaemia is an autosome linked recessive trait  that can be transmitted from parents to…

Q: In 17 18 19 20 21 22 XYY 1. Explain hoH this happened? Be sure to ikde stich parent is at fault and…

A: As per our policy, we are answering the first question only. For the rest of the questions(pedigree…

Q: Below you may find the pedigree diagram for a family with two boys having childhood onset epileptic…

A: An important technique used by geneticists to study human inheritance is the pedigree. A pedigree is…

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

A:

Q: A healthy young couple are both carriers of cystie fibrosis, an autosomal recessive condition What…

A: Cystic fibrosis is basically hereditary disorder in which lungs and digestive system get more…

Q: Muscular dystrophy is a sex-linked recessive disorder that causes the muscles to slowly weaken.…

A: A group of genetic diseases that cause progressive weakness and loss of muscle mass is known as…

Q: reebop model doesn't have a twin. Please help thank you

A: Dominant trait is always expressed whether it is present in homozygous or heterozygous condition…

Q: lia is a recessive X-linked trait. Women who carry the gene but do not have hemophilia are carriers…

A: An inherited clotting condition, haemophilia A is often referred to as basic haemophilia. It happens…

Q: Part A What is the probability that the first son of a woman whose brother has Lesch-Nyhan syndrome…

A: Lesch Nyhan syndrome is X linked recessive disorder. Normal = XX, XXn, XY Affected = XnXn, XnY

Q: A male who has a heterozygous genotype for the autosomal/ complete dominant expression of…

A: A gene is the basic unit of heredity. It is a sequence of nucleotides in DNA which can be…

Q: How can NF1 be spontaneous? Include the following terms: -genotype - phenotype - homozygous -…

A: NF1 or neurofibromatosis I is a Mendelian genetic disorder that results due to mutation in the NF1…

Q: The pedigree below describes the inheritance pattern for "Spinal Muscular Atrophy". Determine the…

A: In order to name the genotypes in a Pedigree one should clearly know the mode of inheritance by…

Q: 1. Research on the Folsom Fruit Fly, D. folsomus, identified the pigment that is responsible for the…

A: The genetic experiment involving crosses in the Folsom Fruit Fly allows us to determine the…

Respiratory Infections

Respiratory infections are infectious diseases of the respiratory tract that are mostly caused by bacteria and viruses. They cause infections of the throat, sinuses, airway path, and lungs. Respiratory infections are typically divided into two types: upper tract respiratory infection and lower tract respiratory infection.