What is the penetrance of this trait? i.e., What is the ratio between the number of individuals in the pedigree who display the trait (numerator) and the number of individuals you know from the pedigree must have the trait-determining genotype (denominator)?

Q: A student is completing a Punnett square for a trait (X/x) that is autosomal and inherited by the…

A: Given: The trait is autosomal dominant. Father doesn't have the trait (xx) Mother have the trait…

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: The allele for albinism is recessive to the allele for normal skin pigmentation. All individuals who…

A: An inherited disorder that presents with little or no melanin production, which results in either…

Q: Given the following genotypes for two parents, AABBCc × AabbCc, assume that all traits  exhibit…

A: Simple Dominance- This means one gene allele is dominant while the other is recessive. Hence, in…

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: 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: How are cross-over events identified?  Consider two flies, a male that is homozygous recessive for…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: Given the map a 15 b 24 c (where 15 and 24 are the respective map distance between the loci) with a…

A: The question is related to 3 point test cross. This cross is used to determine relative position of…

Q: List four modified Mendelian ratios that you can think of.

A: A gene is a unit of hereditary arranged in thousands on the strands of DNA(deoxyribonucleic acid)…

Q: true-breeding white and the F1 generation is all orange. He collects more data by combining an…

A:

Q: Assume that two characters are controlled by genes that are genetically labeled as A and B. In one…

A: We are given with two situations when A and B are linked and when A and B are present on different…

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: 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: A pure-breeding (or true-breeding) individual is homozygous for all genes of interest. From the…

A: True breed refers to the presence of homozygous genotype for each genes.  According to product rule,…

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 pedigree shown in Figure Q19–14, the first born in each of three generations is the only…

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

Q: Duchenne's muscular dystrophy is sex-linked and usually affects only males. Victims of the disease…

A: Duchenne muscular dystrophy is an X-linked recessive disorder and it generally affects males. Males…

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: 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: Consider the cross between a male with genotype AaBbCc and a female with genotype AaBBcc, where A is…

A: Genetics helps us understand how traits pass to progeny and it also helps to understand the…

Q: Determine whether the  phenotypes will be in either a a 9:3:3:1 or 1:1:1:1 ratio. Yellow/Starchy…

A: Inheritance or heredity refers to the process by which the traits present in parents are passed on…

Q: What are the resulting phenotypes from a dihybrid cross between two individuals with curly hair and…

A: The curly vs straight hair trait exhibits incomplete dominance. Curly hair (CC) is the dominant…

Q: Determine whether the 3 phenotypes will be in either a 9:3:4 or 12:3:1 ratio. (Yellow/Red/Purple)…

A: The three phenotypes of the corn kernels are red, yellow, and purple. These pigment colors are…

Q: What are the genotypes and phenotypes of the offspring generation and what are the ratios of each?

A: Ans. According to the question tall and purple are dominant so the genotype of homozygous tall will…

Q: A woman and a man have a red-green colorblind daughter. What can you say about the genotypes of the…

A: Color blindness, particularly red-green color blindness, is a sex-linked recessive genetic trait.

Q: n the previous question (PpYyRr * Ppyyrr), compute the following probabilities. SHOW YOUR SOLUTIONS

A: The given plant is triploid.  Symbol  For purple = PP(dominant) For yellow seed = YY(dominant) For…

Q: Is the trait shown in the pedigree below dominant or recessive? Write the genotypes of each…

A: Pedigree is defined as the diagrammatic representation of individuals of a family for a trait.

Q: PART 2: Breeding Value, Gene Combination Value, Expected Progeny Difference For this part, you will…

A: Gene Combination Value (GCV):Think of GCV as the raw genetic potential an animal inherits from its…

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: Mendel's second law states that alleles of different genes assort independently of each other during…

A: Mendel on working on the pea plants proposed 3 mendelian laws, the traits or genes which inherit by…

Q: In a cross of two pure-breeding lines of tomatoes producing different fruit sizes; the variance in…

A: Genes, environment, and gene interactions are the three main contributors to phenotypic variation…

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: 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: Wheat kernel color is an additive trait controlled by two genes, gene A and gene B. The A1 and B1…

A: The cross between two individuals when performed by making 2 pair of character (alleles) is known as…

Q: heterozygous green (Gg) tall (Tt) plant is crossed with a heterozygous green (Gg) tall (Tt) plant.…

A: As T(Tall) is dominant to t (dwarf). So, TT = Tall, Homozygous dominant  Tt = Tall, Heterozygous…

Q: The allele for the smooth shape of pods (I) is dominant over the allele for the constricted shape of…

A: Answer and Explanation :  Given that, allele for the smooth shape of pods (I) is dominant over the…

Q: - Palomino is a color in horses, (a gold coat); Genetically, the palomino color is created by a…

A: Palomino is colour of horse. It consists of gold coat and white mane and tail. This colour is…

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.