After divorce, individual “A” decides to marry at random outside the pedigree. If the population allele frequency of the rare autosomal trait is 0.012, what are the chances of having an affected child for his first born of his second marriage?

Q: Farmer Brown had two hogs, Olga and Hank.  Olga and Hank were normal, healthy hogs, but whenever…

A: Ogla and Hank must be both heterozygous for the condition. That is why they are producing some…

Q: A man and woman are both heterozygous for an autosomal recessive disease allele. They would like to…

A: Autosomal recessive disease refers to a genetic disorder that occurs when an individual inherits two…

Q: Jim and Pam would like to have a baby, but they know that albinism (an autosomal recessive disease)…

A: Albinism is a rare group of genetic disorders that cause the skin, hair, or eyes to have little or…

Q: Multiple Alleles: Sol is blood type AB and Luna is blood B, what are the odds that they will have a…

A: Multiple alleles in a population occupying the same locus on a chromosome or its homologue are…

Q: Hemophilia is a disease caused by a gene found on the X chromosome. Therefore, it is a sex-linked…

A: If the woman  gets the X chromosome with the hemophilia gene, she will have hemophilia . A man who…

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: A cross between an orange-brown male and a homozygous black female produce four kittens. What is the…

A: Given information The cross is between an orange-brown male and a homozygous black female. Black…

Q: Huntington's disease is a late-onset autosomal dominant disorder. What is the chance that a…

A: Hungtington disease is a brain disorder that causes uncontrolled movements, loss of thinking…

Q: Your mom has brown eyes (Bb) and your dad has blue eyes (bb). Give the percentages of the genotype…

A: Introduction :  The genetic makeup of an organism is its genotype. An organism's phenotype is…

Q: A genotypic ratio of 2:4:2:2:4:2 is possible between a male who is heterozygous free earlobes and…

A: A trait is a characteristic feature that is unique to particular individual . A dihybrid cross is a…

Q: Wilson’s disease is an inherited disorder in which there is too much copper in the body’s tissue. It…

A: A pedigree chart is a graphic that depicts the incidence and emergence of phenotypes of a certain…

Q: Martin and Sue are contemplating having children, but Martin’s brother has an autosomal recessive…

A: A trait, disorder, or disease can be passed down through families in several ways. Autosomal…

Q: What is the probability that a couple will have a child (son or daughter) with an autosomal,…

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

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: 1. Explain the pattern of inheritance and write in the genotypes of the numbered individuals. (a)…

A: The autosomal dominant or X-linked dominant disease is called single gene disorder as the disease…

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: Pigeon color coat is determined by one autosomal gene with two alleles Y and y. Where Y is blue…

A: Alleles are different versions of the same gene. Each gene typically has two alleles, one inherited…

Q: Huntington's disease is characterized by a late onset of nerve degeneration that leads to death.…

A: Huntington's disease is caused by the dominant allele as given in the question.

Q: If a man who has blood type AB marries a woman who is heterozygous for blood type A, which genotype…

A: Blood group inheritance is a kind of inheritance of multiple alleles which involves three alleles…

Q: Using punnett square, determine all the possible phenotype of the offspring having parents with the…

A: Given: The blood type of the wife = Type A The blood type of the husband = Type O All possible…

Q: Assume that the loci are all independent and that the allele represented by the upper case letter is…

A: The DNA (deoxyribonucleic acid) is the hereditary unit of an organism. The DNA is composed of…

Q: Albinism is an autosomal (not sex-linked) recessive trait. What is the probability that, out of 3…

A: Albinism is an autosomal recessive trait. Most often, the parents of an individual with an autosomal…

Q: My father is homozygous dominant (T) for tall and (B) black hair. My mother is heterozygous…

A: A trait is said to be dominant when it is present in large number of individuals of a population. A…

Q: If two married individuals had a sibling affected by cystic fibrosis, what are chances that they…

A: Cystic Fibrosis is an autosomal recessive genetic disorder. It is primarily caused by the mutation…

Q: Polydactyly (having more than five digits) results from the presence of a dominant allele. A man has…

A: Polydactyly is the condition of having extra fingers and toes in humans. It is caused by…

Q: A man has six digits on each hand and foot (an autosomal dominant trait).  His wife and first…

A: A condition in which an individual has more than 5 digits is known as polydactyly. Polydactyly is an…

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: A man with AB blood type marries a woman with O blood type. What is the expected phenotypes (use…

A: Allele for blood group AB are IAIB  And allele for blood group O are ii When we cross man with AB…

Q: what is the probability of having a blood type AB, given that mara has heterozygous blood type a…

A: The human blood group is controlled by a single 'i' gene having three allele, i, iA and iB. A person…

Q: at least 1 child with attached earlobes

A: Homozygous individuals mean there is a pairing of the two same types of alleles and both of the…

Q: In a cross between fair skin, black hair (heterozygous for all these traits) with brown skin, red…

A: A genetic trait is considered dominant if it is expressed in a person even in its single copy. While…

Q: *Cystic fibrosis is a rare autosomal recessive condition. A phenotypically normal man whose father…

A: Mendel proposed three laws based on his research. His research provided a picture of the independent…

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

A:

Q: In a Punnett square for a trait (X/x) that is autosomal and inherited by the dominant allele. The…

A: We can easily predict the genotype and phenotype of progenies using punnett square.

Q: If a father with type O blood and a mother with AB blood have children,calculate the percentages of…

A: Blood type O= ii (recessive) Blood type AB = IA IB (dominant)

Q: Two parents learn they are each carriers for Cystic Fibrosis, each having the genotype (Aa). Using a…

A: Alleles are the alternatives form of a gene, that are located on the same locus of a  homologous…

Q: Consider the two traits: Blood Type B (Parents and Child with Blood Type B, Grandparents unknown)…

A: A three-generation pedigree chart is a graphical representation of a family tree that shows the…

Q: Brown eye color is dominant to blue eye color. Individual A is heterozygous for brown eyes.…

A: Mendelian monohybrid cross takes a pair of contrasting characters into account. Here it has been…

Q: Which of the following probabilities is correct (according to Mendel's law of independent…

A: With the given genotypes of the parents, let us first make a Mendelian Cross and obtain F1…

Q: recessive (aa) for the attached earlobe gene, what is the probability that their second child will…

A: Punnett square is considered a method that is used widely for the prediction of different genotypes…

Q: Based on the genes of a mom and dad, there is a 1/2 chance they will have a child with brown hair…

A: Probability is the most essential and commonly used in molecular biology and genetics experiments.…

Q: FOR A ALLELE A WOMAN IS HETEROZYGOUS TRAIT CAUSED BY A DOMINANT THAT SHOWS 75% PENETRANCE. HER…

A: The term "heterozygosity" describes the existence of various alleles of a gene in a person's genome.…

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.