Duroc Jersey pigs are typically red, but a sandy variation is alsoseen. When two different varieties of true-breeding sandy pigswere crossed to each other, they produced F1 offspring that werered. 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.

Q: Using Mendelian symbols, our cross is PpYyRr × Ppyyrr. What fraction of offspring from this cross…

A: Dominant will always mask the recessive genes and it will appear either in homozygous or…

Q: A true-breeding plant with round and green seeds was crossed to atrue-breeding plant with wrinkled…

A: The parental cross is between true-breeding lines of wrinkled yellow seeds (rrYY) and round green…

Q: You cross AY /A; C/c x AY /A; c/c Which proportion of progeny would be agouti (gray)? 1) 1/2 2) 1/3…

A: Introduction  When genes interact adversely, called epistasis, one gene might hide or hinder the…

Q: In a fungus with four ascospores, a mutant allele lys-5 causes the ascospores bearing that allele…

A: An ascus is a sac-like structure within an ascomycete fungi that contains ascospores. Ascospores are…

Q: For all seven characters described in the data of Mendel allowed the F2 plants to self-fertilize. He…

A: Step 1 The basic principles of inheritance as given by Mendel are collectively called Mendel’s…

Q: We have dealt mainly with only two genes, but the sameprinciples hold for more than two genes.…

A: a) To find: What proportion of progeny will phenotypically resemble (1) the first parent (2) the…

Q: Researchers studying blind cave fish that lack eyes found that crossing two pure-bred fish from the…

A: Within the puzzling depths of caves, analysts have found fish that have adapted to their environment…

Q: In the ABO blood type system, a cross between which two phenotypes could result in offspring of all…

A: ABO blood group is determined by the presence of a specific antigen on the plasma membrane of RBC.…

Q: Pea plants with purple pollen and long-shaped pollen were crossed with each other with the following…

A: In the sweet pea plants, the allele for purple flowers is dominant (P) and the allele for red…

Q: In the cross TtPpAa x ttPpaa, what fraction of offspring are predicted to be homozygous recessive…

A: We can better grasp how features, like height or eye color, are handed down from one generation to…

Q: The A & B antigens in humans may be found in water-soluble forms in secretions, including saliva of…

A: Antigens are generated in the human body by the allelic activity of the A, B, and O group loci in…

Q: A cross between two red flower plants produces 2/3 progeny that are red and1/3 progeny that are…

A: The alleles are the alternative forms of a gene that are located on the same locus of the same…

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: Manx cats have no tail. This is caused by a dominant mutation M, which is embryo lethal when…

A: A lethal gene is a gene which when present in its specific condition (dominant or recessive) causes…

Q: The following pedigree shows the inheritance of deafmutism.a. Provide an explanation for the…

A: Deafmutism is a term that is used to define a person who is deaf. These individuals use sign…

Q: Two 11-inch nosed F1 individuals are crossed. How often will their progeny have noses AT LEAST 15…

A: Snuffleup is an ant-eating mammal that has a nose that varies in length between 3 to 19 inches long.…

Q: When two inbred plants with triangular pods were crossed, the Fi plants all had ovate The resulting…

A: This is definitely a cross in which an allele apart from the main allele also determines the pod…

Q: You cross a black dog which is homozygous dominant for two genes B and E (B determines pigment…

A: The Principle of Independent Assortment describes how different genes independently separate from…

Q: If you had a fruit fly (Drosophila melanogaster) that wasof phenotype A, what cross would you make…

A: The working segment of DNA that mainly codes for proteins is a gene. Genetics is the study of genes.…

Q: In a mendelian monohbrid cross which generation is always completely heterozygous?

A: In Mendelian monohybrid cross, only one character or trait is considered for the study purpose.  The…

Q: On a fox ranch in Wisconsin, a mutation arose that gavea “platinum” coat color. The platinum color…

A: A gene is the essential physical and functional unit of heredity. They are comprised of DNA…

Q: 1 2 I ww Ww 2 II O 3 4 5 6 7 III 1 2 3 4 IV

A: Pedigree analysis is the study of the hereditary patterns of the various generations of the family.…

Q: Two pea plants heterozygous for pod color and pod shape characters are crossed. Draw the punnet…

A: According to Mendelian's Law, the appearance a character or trait depends on a combination of…

Q: Extranuclear inheritance often correlates with maternal inheritance. Even so, paternal leakage may…

A: The study of genetic variations, heredity, and genes is called genetics.

Q: Parts a-c of this question address the crossing of parents with the following genotypes: A/a; B/b;…

A: In the given question, a cross is made between parents- A/a; B/b; C/c; D/d; E/e; F/f…

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: When Mendel did crosses of true-breeding purple- and white-floweredpea plants, the white-flowered…

A: Gregor Mendel discovered the fundamental rules of inheritance after his studying the breeding of…

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…

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.