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: A linkage map shows the distance between gene 'a' and gene 'b' to be 40CM, how many of each genotype…

A: Punnett Square Geneticslinkage map shows that the distance between gene a and gene b is 40…

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: Calculate the probability of either all-dominant or all-recessive genotypes for the alleles A, B, E,…

A: For each gene pair, the probability of getting a homozygous dominant genotype (e.g., AABB) is 1/4…

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: Wilson's disease is an inherited disorder caused by a mutation in the ATP7B gene. Individuals…

A: From the given pedigreees we can identify the mode of inheritance of Wilson's disease. In both…

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

A: As cystic fibrosis is an autosomal recessive trait. So, FF = Normal, homozygous dominant  Ff =…

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: Achondroplasia is a form of dwarfism caused by a dominant, autosomal allele that diminishes bone…

A: Achondroplasia: Achondroplasia is a genetic condition characterised by dwarfism as its predominant…

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: What is the probability of cousins 16 & 17 producing an albino offspring?

A: The tabular representation of family history by taking into consideration a disease or character…

Q: Consider the following cross examining four gene in two parental lines: Parent 1: A/a; B/b; D/d; e/e…

A: Product rule is used to determine the overall probability. The product of probability of two…

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: A phenotypic ratio of 6:6:4 is possible between a male who is heterozygous free earlobes and…

A: Given  Male is Heterozygous for both Heterozygous for free earlobe and Heterozygous for freckles.…

Q: If the frequency of the homozygous dominant genotype is 0.49, what is the frequency of the…

A: The frequency of the homozygous dominant genotype (AA) in a population is reported as 0.49. The…

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

A: Given: The A and B alleles each add 3 inches of cucumber growth. The a and b alleles add only 1…

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

A:

Q: Achondroplasia is a hereditary disease with a very characteristic phenotypic manifestation. The…

A: Introduction  The Hardy-Weinberg principle, also known as the Hardy-Weinberg equilibrium, model,…

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

A:

Q: Dihybrid crosses which involve genes that are linked to each other usually give unexpected results…

A: Dihybrid cross gives rise to 9:3:3:1 phenotypic ratio which leads to Mendel's second law of…

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: 5. (Spoilers! But the book is 85 years old...) Smaug met his demise during the razing of Lake-town…

A: Given the information, Smaug's genotype for the three traits , Smaug is a male dragon, and males are…

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: Assume that plant height is determined by a pair of alleles at each of two loci (A and a, B and b)…

A: In diploid organisms every chromosomes are present in two copies. So every genes have 2 alleles. In…

Q: Predict the probability that an offspring of this cross will: a. Express the gray phenotype b.…

A: epistatic gene, in genetics, a gene that determines whether or not a trait will be expressed.…

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: 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: Why are monozygotic twins who are reared apart so useful in the calculation of heritability? What…

A: Heritability measures the amount a phenotype is caused strictly by gene than environmental…

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: For the pedigrees below, name the inheritance pattern of the depicted disorder: If more than one…

A: Introduction :  A pedigree chart is a diagrammatic flow chart designed to display a person's genetic…

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

A: In type I albinism, the amount of active tyrosinase enzyme is reduced. This enzyme plays an…

Q: Given the pedigree below: Is the trait dominant or recessive? What are the most likely genotypes of…

A: The pedigree analysis shows the transmission of a genetic trait over generations in a family.

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 container/tub, place 50 pieces of red paper, 50 pieces of pink paper, and 50 pieces of white…

A: In genetics, genes forms the hereditary units and alleles are the alternative forms of the genes.…

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.