In goats, development of the beard is due to a recessive gene. The following cross involving true-breeding goats was made and car- ried to the F2 generation: P;: bearded female x beardless male F1: all bearded males and beardless females ´1/8 beardless males | 3/8 bearded males 3/8 beardless females 1/8 bearded females F; × F, Offer an explanation for the inheritance and expression of this trait, diagramming the cross. Propose one or more crosses to test your hypothesis.

Q: Perform two consecutive crosses similar to those of Mendel for the following individual plants.…

A: Plants with round seeds (RR) and plants with wrinkled seeds (WR) are crossed (rr). Both parents are…

Q: In humans, four different blood types (A, B, AB, and O) are encoded by three alleles 1. I. and &…

A: Antibodies and antigens are types of blood proteins that vary from person to person. Antigens are…

Q: Explain at the biochemical or enzymatic level, the phenotypic consequences of alleles incase of…

A: This is the phenomenon called incomplete dominance which is usually seen in snapdragons. In the…

Q: Two heterozygous parents are crossed. If the two loci are linked what would be the distribution of…

A: Introduction In this question we have to write the distribution of phenotypic features in F1…

Q: A certain plant species has dominant red flower color (R) to the recessive white flower color (r). A…

A: Introduction Inheritance is the process of transmitting traits from parent to offspring. The traits…

Q: You have a purple-flowered pea plant, but you do not know if it is homozygous (PP) or heterozygous…

A: The P allele encodes purple flower. This allele is dominant over p allele. The pp encodes white…

Q: represent autosomal genes and X and X' represent X-linked alleles in an organism with XY sex…

A: This cross is a polyhybrid cross involving at least 4 genes with 8 alleles. The genes are placed on…

Q: Given the expected phenotype probability that you determined above, what is the minimum number of…

A: To calculate the expected number of offspring with the AB phenotype, you can use the product rule of…

Q: In a species of the cat family, eye colour can be gray, blue, green or brown, and each colour is…

A: Given:

Q: Cross a heterozygous dominant purple flowered plant to a recessive white flowered plant. What is…

A: From the monohybrid cross, Mendel’s law of segregation was given. According to this law, when two…

Q: 28. You perform a cross between two true-breeding strains of zucchini. One has green fruit and the…

A: In genetics, epistasis is a phenomenon in which the expression of one gene (the epistatic gene)…

Q: The production of eye-color pigment in Drosophila requires the dominant allele A. The dominant…

A: P   red-eye female X white-eye male F1 purple-eyed females        and       red-eyed males…

Q: List the possible genotypes of the parents if a cross resulted in a F1-generation consisting of 50%…

A: monohybrid cross involves just one trait I.e color. Here the two different versions of color is used…

Q: In the guinea pig, one locus involved in the control of coat color may be occupied by any of 4…

A: The gene is the basic structural and functional unit of heredity and it makes up the…

Q: In the following dihybrid cross: B/b; E/e x B/b; e/e What are the phenotypes of the offspring?…

A: Dihybrid cross BbEe × Bbee Gametes  BE Be bE be Be BBEe black  BBee Golden BbEe black…

Q: Whyte type canaries are yelllow. A dominant mutant allel of the color gene, designated W causes…

A: Introduction :- A genetic disease manifests in autosomal recessive inheritance when one variant is…

Q: In humans, blood type is inherited based on multiple alleles in which type A and type B are dominant…

A: Note: First question is incomplete and upload it separately. In pea plants, round seeds are dominant…

Q: Tallness (T) in a certain plant is dominant to short (t), while red (R) flower color is dominant to…

A: The alleles are generally of dominant and recessive type and some other forms like codominant and…

Q: In fruit flies, normal wings (G) are dominant to glossy wings (g) and red eyes (R) are dominant to…

A: Phenotypic expression seen in organisms are shown by genes. Most genes have two alleles and the…

Q: Pepper plants of the species Capsicum annuum produce peppers of 4 different colors (red, orange,…

A: The correct response to this particular question will be, pepper color is controlled by two genes.

Q: In fruit flies, eye shape is an X-linked trait. Round eyes (XG) are dominant to almond-shaped eyes…

A:

Q: In chickens, the Leghorn variety has white feathers due to an autosomal dominant allele. Silkies…

A: An allele is one of at least two renditions of a gene. An individual acquires two alleles for every…

Q: In sesame plants the one-pod condition is dominant (P) to the three-pod condition (p), and a normal…

A: It is given that one-pod condition is dominant (P) to the three-pod condition (p) and normal leaf…

Q: Recall that red color (R) in four-o’clock flowers is incompletely dominant over white (R ′). In the…

A: Genetics is the branch of biology which deals with genes, heredity, and genome in the organism.…

Q: The phenotypes and genotypes that result from a cross of Aa and aa (A = normal pigmentation and a =…

A: Albinism is a category of hereditary disease in which the body produces little or no melanin. Skin…

Q: a. In a type of plant, pink flowers (P) is dominant over white flowers (p), and tall (T) is dominant…

A: Dominant allele are the alleles which produce their effect . It can be shows its effect in…

Q: Identify the four possible gametes produced by the following individuals (Y = yellow, y = blue, S =…

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Q: Assuming a pure-breeding P generation, what ratio would you expect in the F2 generation if a mutant…

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

Q: In fruit flies (Drosophila melanogaster), the bn+ allele for normal dull red eyes is dominant to the…

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

Q: The ABO blood group is one set of blood antigens. Ther is a separate locus (H) that controls the…

A: Inheritance - Inheritance is defined as the process of transfer of genetic information from parents…

Q: Cross a heterozygous dominant purple flowered plant to a recessive white flowered plant. What is…

A: Mendelian genetics discusses the principles of inheritance of a trait. Mendel proposed three basic…

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: When pure breeding red dragons with large wings are mated with pure breeding green dragons with…

A: Let ‘R’ represent the red color allele and ‘r’ represent the green color allele.  Also, Let ‘L’…

Q: In the progeny of controlled crosses,recognize phenotypic ratios diagnostic ofsingle-gene…

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

Q: A man with blood type O (genotype ii) has a father with blood type A and a mother with blood type B.…

A: In human blood group typing, the ABO system of blood grouping is used.  The Blood groups are A, B,…

Q: Consider a cross between a Brown furred dog and a Yellow furred dog. All the puppies born from these…

A: Ans- True Autosomal Recessive Inheritance As in the case of an autosomal recessive trait, it is…

Q: Phenotypes PAO PAo PaO Pao PAO pAo pao pao x no zygo Number 91 427 6 106 120 7 323 62

A: Given:The fruit berry nispero, Eriobotrya japonica, has the recessive mutant genes p (purpura =…

Q: In an autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is…

A: Polyploidy is a condition in which there would be the presence of more than two sets of chromosomes…

Q: If a heterozygous F1 Tobacco plant was crossed to an albino plant, what is the expected number of…

A: If a heterozygous F1 Tobacco plant was crossed to an albino plant, what is the expected number of…

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…

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.