Alkaptoneuria is a recessive genetic disorder found among North American populations at a frequency of about 1 in 500,000 births. How frequently would you expect this defect to be expressed among children of second cousin marriages? F=1/64

Q: When many families were tested for their ability to taste the chemical PTC, the parental pairs were…

A: The ability to taste PTC is a dominant trait. Taster = TT, Tt Non taster = tt

Q: Two unlinked genes, A and B, encode very similar enzymes involved in the production of purple flower…

A: In the given context, there are two independent genes, denoted as A and B, which are responsible for…

Q: One parent with the Achondroplasia phenotype and a normal parent have 2 children. Both children have…

A: Achondroplasia is a type of osteochondrodysplasia in which the cartilage at the ends of the limb…

Q: What is the penetrance of this trait? i.e., What is the ratio between the number of individuals in…

A: The term "penetrance" refers to the rate at which a given gene is present in a population and…

Q: Galactosemia is an autosomal recessive human disease that is treatable by restricting lactose and…

A: Let,  G - allele for normal galactosemia gene g - allele for recessive galactosemia allele.  Since,…

Q: We think that dwarfism in river birch might be inherited as a single-locus, simple Mendelain trait.…

A: Inheritance or heredity is passing on one trait from the parents to the progeny by either asexual or…

Q: Trait R is a Mendelian trait in humans for tongue rolling. The allele for the ability to roll the…

A:

Q: The cystic fibrosis allele is recessive. The frequency of cystic fibrosis is 0.000484, or about one…

A: The Hardy-Weinberg principle or equilibrium states that allele frequencies remain constant from…

Q: Calculate probability of sex-linked phenotypes of multiple offspring using binomial expansion NLGN3…

A: The NLGN3 gene or Neuroligin 3 gene is a Protein Coding gene. This gene is located in X chromosome.…

Q: Below is a pedigree of a rare human genetic disease in which stricken individuals are solid-colored.…

A: There are five modes of inheritance and they are X-linked dominant, X-linked recessive, autosomal…

Q: A person is heterozygous for the Freckles phenotype (Ff) and also heterozygous for the PTC-tasting…

A:

Q: In the red backed vole (a small mouse-like mammal) there are two traits under investigation.  The…

A: The given problem can be solved with the help of a test cross. A test cross is used to determine…

Q: Female pig Emmy Lou (straight tail, white-haired) with the haplotype cH/Ch was mated to a…

A:

Q: A homozygous fly with two recessive mutations causing purple body and short wings (ppss) is mated…

A: Introduction :  Haplotype refers to a group of HLA genes found on a certain chromosome. These genes…

Q: In pedigrees, individuals are usually specified by using a Roman numeral for their generation in the…

A: Cystic fibrosis (CF) is an inherited disorder that causes severe damage to the lungs, digestive…

Q: If the penetrance for the autosomal trait for blue eyes is 75%, what is the probability that a…

A: Penetrance refers to the fraction of people who have a specific genetic mutation and exhibit the…

Q: In humans the absence of a cleft chin is dominant to the presence of a cleft chin. Two individuals,…

A: In human genetics, traits are often inherited based on the principles of dominance and…

Q: You are studying a disorder that is based on the genetic cómposition at three loci. Assume that a…

A: Given value :  Dominant allele adds up 6 units of risk  recessive allele adds up 2 units of risk…

Q: If one person with the trait of Huntington's disease (H h) has 2 children with a partner who does…

A: INTRODUCTION Huntington's disease It is an inheritable disease in which nerve cells in the brain…

Q: One particularly useful feature of the Hardy-Weinberg equation is that it allows us to estimate the…

A: Hardy-Weinberg equilibrium states that, in a population allele and genotypic frequencies will remain…

Q: The fly with vestigial wings is crossed with the fly with normal wings shown in the upper-right…

A: The length of wings in Drosophila is determined by the wing length gene. There are two distinct…

Q: Assume that the length of a type of cucumber at maturity is controlled by two genes (A and B), each…

A: 1/8-10" , 3/8-8" , 3/8-6" , 1/8-4"

Q: Below in Figure 1 is a pedigree for a family afflicted by a genetic disorder. In some populations,…

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

Q: Tay-Sachs disease is a recessive genetic disease. Individuals with this disease rarely survive past…

A: An uncommon hereditary condition that impacts the brain and spinal cord is called Tay-Sachs disease.…

Q: In a true breeding parental cross for an Autosomal recessive disease trait, the expected proportion…

A:

Q: Type 1 albinism in humans is a rare hereditary condition associated with a reduced amount of active…

A: Albinism is a genetic disorder characterized by reduced melanin production. The tyrosinase enzyme…

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: Nonrecombinent phenotypes: Female/males with gray body/red eyes; females/males with yellow…

A: GIven: Recombinant genotypes are forme by linked genes and their ocmbinations where these…

Q: humans, the gene for right-handedness is dominant to the gene for left-handedness. A man and a woman…

A: Law of Dominance states that dominant alleles always mask the recessive alleles. The characters that…

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.