The presence of a dimple on the cheek is governed by a dominant gene. A couple had already 4 children with dimpled cheeks. What would be the probability of having the next child as another dimpled if both parents are heterozygous for this character? Show a solution using Punnett Square Method.

Q: Red-green colour blindness is a sex-linked trait. Red-green colour blindness (Xrg) is the inability…

A: Color blindness occurs when you are unable to see colors in a normal way. It is also known as color…

Q: The trait for red hair is recessive (r) to the trait for brown hair (R). What is the probability…

A: Traits in simple terms are referred to as characteristics. These traits are controlled by hereditary…

Q: What would the probabilities be for the following outcome? 4 offspring, all normal. The father (has…

A: Introduction: Pattern of inheritance is governed by both the parents.  X represents the dominant…

Q: In a heterzygote cross between two peas, where A is dominant and a is recessive. In a pod with 4…

A: Traits are simply defined as "Characteristics", for instance, these can be the Colour, height,…

Q: How many unique gametes could be produced through independent assortment by an individual with the…

A: ANSWER;- 8 unique gametes could be produced through independent assortment by an individual with the…

Q: Red-green color blindness is an X-linked recessive disorder.  If Allison is heterozygous (a…

A: Introduction: Color blindness is an inherited sex-linked disorder that affects the  ability of…

Q: A, B and C are three linked genes,  A and B are separated by 40 cM and B and C are separated by 30…

A: Two linked genes have a certain “rate of concurrence” of recombination between them. This is known…

Q: A human female who is heterozygous of the sex-linked trait causing red-green color blindness marries…

A: As a sex-linked characteristic, colour blindness is caused by a gene which is found on the sex…

Q: A man who is red-green color-blind marries a woman who is neither color-blind nor a carrier for this…

A: colour blindness - Colour blindness is a usually a  hereditary condition . Red  or  blue colour…

Q: trait represented by the colored circles and squares below is inherited as a dominant allele. This…

A: The inheritance pattern in this pedigree is autosomal dominant. In this type of inheritance mutation…

Q: A man is homozygous dominant for fair skin and heterozygous for black-straight hair, his wife has…

A: Homozygous is the condition in which an offspring inherits the same alleles for a specific gene from…

Q: If an individual from this cross reproduces with another of the same genotype, what are the chances…

A: Straight hair line is a recessive trait. (ww) This trait will only be expressed when both the…

Q: Inigo Montoya is healthy but his mother had the recessive condition, cystic fibrosis, which is…

A: Cystic fibrosis is a disease that is inherited in an autosomal recessive manner. An affected…

Q: Red-green colour blindness is a sex-linked trait. Red-green colour blindness (Xrg) is the inability…

A: Answer: X-LINKED RECESSIVE DISORDER : These are the disorders which are transferred from affected…

Q: Suppose that a female who is colorblind mates with a male who is not For (a) and (b), make sure to…

A:

Q: Brown eyes are dominant over blue eyes. In the same manner, the presence of dimples is dominant over…

A: The Punnett square is a squared design utilised in estimating genotype in a crossover or mating…

Q: Erminette fowls have mostly light colored feathers with an occasional black one, giving a flecked…

A: In this question, we are given a total progeny of 48 out of which 22 are Erminette, 14 black and 12…

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: chin fissure is a dominant trait controlled by a single gene. If a man (homozygous dominant) with…

A: As given chin fissure is a dominant trait which means it will express even if there is a single copy…

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: What will be the expected phenotypic class distribution if only two genes are linked?

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

Q: The pedigree below shows a family where several members (filled boxes) are affected with a genetic…

A: Pedigree : Pedigree analysis is a graph that depicts a family tree and shows which family members…

Q: What would be the results in terms of the genotype and phenotype if one parent were heterozygous for…

A: Introduction  Transmission of characters/genes from parents to offspring is referred as Inheritance.…

Q: Two genes, A and X, exhibit incomplete linkage. The frequency of the parental gametes (AX and ax) is…

A: When genes exhibiting different traits are located on the same chromosomes they are said to be…

Q: Attached earlobes is recessive while “Free” earlobes is dominant. Determine the phenotypes for both…

A: Let the dominant allele for free earlobes be = Eand the recessive allele for attached earlobes be e…

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: Red-green colour blindness is a sex-linked trait. Red-green colour blindness (Xrg) is the inability…

A: A structure of colorblindness in which red and green are saw as indistinguishable. This is the most…

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: Assume that long fingers are Inherited as a recessive trait with an 80% penetrance.  Two people…

A: The percentage of people with a specific genotype who also displayed the predicted phenotype is…

Q: Suppose that goats have one gene that codes for color, where A is brown and a is white. The goats…

A: The alleles that an individual carries are inherited from each parent. The dominant…

Q: Brachydactyly is a genetic condition in which the fingers are abnormally short in heterozygotes.…

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

Q: If there is a possibility of four different genotypes in the offspring that result from a…

A: A gene can be referred as a unit of hereditary. They pass the information from one generation to…

Q: Red-green color blindness is an X-linked recessive disorder. If Allison is heterozygous (a carrier),…

A: The X-linked genes show a different pattern of inheritance in males and females. The male progeny…

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: Calculate the probability of two heterozygous (all 4 gene loci) parents producing a child with the…

A: Heterozygous parents means AaBbCcDd is the parental phenotype we have to find the probability of…

Q: Red-green colour blindness is a sex-linked trait. Red-green colour blindness (Xrg) is the inability…

A: Given: Red-green color blindness is a sex-linked trait. Red-green colour blindness (Xrg) is the…

Q: What would be the probability of having 2 children showing the dominant character and 2 showing the…

A: An allele is a pair of genes which appear at a particular location on a particular chromosome and…

Q: Punnett square

A: Punnet square: It is defined as the graphical representation or square diagram which is used to…

Q: The diagrams represent two human somatic cells, one from a female and one from a male, and the…

A: Introduction  Inheritance refers to the transmission of genetic information from parents to their…

Q: If the man, from the previous question, is heterozygous for type A blood and the woman, from the…

A: The blood group is determined by gene I. Gene I have different alleles, these are: IA = It…

Q: A normal woman has a father who has red-green colour blindness. She had a child with a man who does…

A: Correct answer: (c) 0.25 Color blindness is a X- linked recessive disorder When we cross a normal…

Q: The image shows a pair of homologous chromosomes from a single parent before gamete production. M1…

A: Genetic linkage is a study which shows us the  genes or alleles which are close to each other on a…

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.