Duroc Jersey pigs are typically red, but a sandy variation is also seen. When two different varieties of true-breeding sandy pigs were crossed to each other, they produced F1 offspring that were red. When these F1 offspring were crossed to each other, they produced red, sandy, and white pigs in a 9:6:1 ratio. Explain this pattern of inheritance in terms of number of genes, and any allele or gene interactions.

Q: Consider a cross between a true breeding purple flowered pea plant (genotype PP) and a true breeding…

A: Phenotype is the external appearance of an organism.

Q: Gene A converts compound A (white) to compound B (blue). Gene B converts compound B to compound C…

A: Compound A→→→→→→→→ (white)                            Gene A Compound B→→→→→→→→ (Blue)…

Q: The presence of second allele (E) affects the coat color of Labrador. In particular, the presence of…

A: This is an example of recessive epistasis. Consider the B locus genes are responsible for the…

Q: In some plants, a purple pigment is synthesized from a colorless precursor. In a cross between two…

A: The question is asking us to determine the mode of inheritance and the phenotypic ratio based on the…

Q: A cross like this (between two individuals heterozygous for two traits) is often referred to as a…

A: A two-point cross includes two parents heterozygous for two different loci.

Q: In pigs, the dominant C allele produces a curly tail. c/c homozygotes have straight tails. The…

A: In this question, we are given two genes, C and W which are present on the same chromosome. C gene…

Q: You are a cat breeder and was asked to choose two parents (male and female) among a group of cats…

A: A genetic cross is the intentional mating of two people that results in the combination of genetic…

Q: Consider five unlinked genes: a, b, c, d, e are the recessive alleles, and A, B, C, D, E are the…

A: Quintuple heterozygote individuals are individuals who have inherited five different versions of a…

Q: In pea plants yellow seed color, (GG) and round seed shape (WW) seeds are dominant traits, while…

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

Q: hen crossing a true breeding white mouse with a true breeding brown mouse your friend tells you she…

A: Genes are the functional unit of heredity. They contain information that is transferred from one…

Q: snail, the dominant allele N codes for right-handed shell coiling and recessive allele n codes for…

A: Genes exist in two versions namely"recssive" and "dominant". The recessive alleles are those that…

Q: Parakeets can have white, blue, green or yellow feathers. Feather color in parakeets is determined…

A: The color of feathers in parakeets is determined by genes B and Y. The different feather color…

Q: In wild sunflowers, populations occurs that are either yellow or white. one variety of true breeding…

A: It is given that, in wild sunflowers, populations occur that are either yellow or white. one variety…

Q: Gene “A” and gene “B” are not linked. Each has two alleles. The A allele is dominant over the a…

A: In this question, we are given with two genes A and B. These genes are such that allele A is…

Q: The pedigree shown below shows the inheritance of cystic fibrosis, a disorder that causes severe…

A: Cystic fibrosis is an inherited disorder that causes extreme damage to the lungs, digestive system,…

Q: n guinea pigs, black hair color (B) is dominant and brown hair color (b) is recessive. Long hair (L)…

A: Zygozygosity can be heterozygous or homozygous. Heterozygous people have one recessive and one…

Q: n dogs, black (B) is dominant over brown (b) color. What would be the color of the puppies if a…

A: A diagram that is used to predict the genotypes and phenotype of a particular cross or an breeding…

Q: In rats, hair color is either gray (G), black (g), or white. The white color is produced due to an…

A: In genetics, epistasis is defined as a non mendelian theory in which the expression of more than a…

Q: Use the following information to answer the next question. Gregor Mendel examined the inheritance of…

A: Given: Seed coat texture is represented as S - smooth and s - wrinkled. The seed coat color is…

Q: What is the genetic distance between red petals and waxy texture?

A: Gene distance  Gene distance means the number of bases present between two gene. On the basis of…

Q: Pigeons display a high color variety, here we try to understand the genetic basis of mixed red &…

A: This question explores the genetic basis of mixed red and black stippling of the feathers (kitey)…

Q: A pea plant has a mendilian completely dominant gene for height lower colour phenotype. A pure…

A: Gregor Johann Mendel is considered to be the father of genetics. He postulated the theories of…

Q: ee different crosses decide the most likely genotype of each of the parents. Use the gene symbols…

A: In this case, Complete dominance at both gene occurs but one gene, when homozygous recessive, is…

Q: Seed color is controlled by 3 independently assorting bi-allelic genes (P, Q, R), such that…

A: The correct answer to this question: option d. 4:1

Q: Consider a dominant pure-breeding parent pea plant that had green peas, was tall, and had purple…

A: Genotype refers to the genetic makeup of an organism, including all the inherited genetic…

Q: e, since albino mice are neither yellow nor agouti colored. oss is AaCc to Aacc. What fractions of…

A: A gene usually in  homozygous condition may prevent development or cause the death of an organism or…

Q: An allele for coat color in mice, Y, produces a yellow coat color when present. The phenotypes of…

A: The combination of some of the alleles show lethal phenotype.

Q: In alley cats, the coat color is determined by a gene carried on the X-chromosome. At the same time,…

A: The objective of the question is to determine the probable paternity of a litter of kittens based on…

Q: In pea plants, purple flowers are dominant to white flowers.  Perform the following cross- A pea…

A: In this scenario, we are dealing with a classic Mendelian genetics problem. We have two pea plants:…

Q: Consider a situation where you have a parental cross with the mother and father phenotypes listed…

A: In this case, data from a parental cross and later generations of children are provided to us. If an…

Q: An insect from a strain breeding for white eyes (RRww) was crossed to an insect from a strain…

A: When an organism is heterozygous, it has two distinct alleles of the same gene. For instance, pea…

Q: You have pure breeding lines of lizards.  One pure breeding line has very long tails and the other…

A: Apart from the classical mendelian phenotypic ratios, several non mendelian phenotypic ratio like…

Q: In horses, two different genes affect the coat. One gene which codes for coat colour has 2…

A: Genetics is a branch of biology involved in the study of genes, genetic variation, and heredity in…

Q: You have two true-breeding strains of coneflower. One strain has purple flowers and purple stems.…

A: Genetics helps us understand how traits are inherited. Genetics can help us understand how traits,…

Q: In rabbits, an allelic series helps determine coat color. The alleles, in order of dominance, are…

A: In genetics, several experiments were performed to understand the inheritance of a particular trait…

Q: In wobble bats coat color is determined by a single gene. A black coat is dominant to a brown coat…

A: Answer : The alleles ahoul be  B- black , b- brown The genotype of a homozygous black coated wobble…

Q: As a hypothetical example, a trait in mice results in abnormallylong tails. You initially have a…

A: True breeding is  a type of breeding where the parents produce an offspring that carries the same…

Q: Referring to the pattern of inheritance of comb type and feathering in chicken, consider the cross…

A: Here the hen is given heterozygous feathering and walnut comb and cock is walnut comb and feathered…

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.