Two different genes control the expression of kernel colour in Mexican black corn: a black pigment gene (B) and a dotted pigment gene (D). Gene B influences the expression of gene D. The dotted phenotype appears only when gene

Q: Convert the expected phenotypic ratio from Part A into the expected probability for each of the four…

A: Dominant traits Round fruit (R) Red fruit (F) Recessive traits oval fruit (r) Yellow fruit (f)…

Q: A geneticist is using a three-point testeross to map three linked Drosophila recessive mutations…

A: Gene mapping is a process through which scientists can evaluate the presence and position of genes…

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

A: Inheritance is defined as the process by which genetic information will be passed or transmitted…

Q: In humans, a very rare dominant allele that causes the little fingerto be crooked has a penetrance…

A: Penetrance is the probability of expression of a trait or gene. In a few cases, the phenotype is not…

Q: Two wheat plants that are heterozygous for recessive alleles a and bare crossed. Both parents carry…

A: In dihybrid crosses, an arrangement in which the wild-type alleles of both loci are contributed…

Q: A wild-type fruit fly (heterozygous for gray body color andnormal wings) is mated with a black fly…

A: Hi since there are multiple questions posted we will provide you with answers for the first question…

Q: In a strain of tomato plants, short plant height and small fruit size are traits that display…

A: Genes will express according to their nature.If they are dominat to other gene then the dominant…

Q: You obtain two plants, one that is homozygous wild-type at locus B and one that is homozygous for a…

A: A natural form of gene is a wild-type gene. A wild-type gene is in its original form and is not…

Q: Hemophilia and colorblindness are both recessive conditions caused by mutations in genes on the X…

A: Sex-linked diseases or diseases are genetic diseases that occur due to the abnormality of genes in…

Q: In chickens, some varieties have feathered shanks (legs), but othersdo not. In a cross between a…

A: Homozygosity is a condition where both the copy of the gene will be the same, whereas in…

Q: You find two different notch-winged fruit flies in your normally smooth-winged collections. After…

A: Notched wing trait is recessive homozygous.  Suppose that it is denoted by nn Smooth winged…

Q: In maize (corn) plants, a dominant allele I inhibits kernel color, while the recessive allele i…

A: Recessive character is always expressed in homozygous condition where as dominant character is…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: Given that, allele R is dominant over allele r where R represents the allele for round shape and r…

Q: Hemophilia and colorblindness are both recessive conditions caused by mutations in genes on the X…

A: Sex-linked diseases are hereditary sicknesses that happen because of the variation from the norm of…

Q: In a cross involving polygenic inheritance, three (3) gene pairs control plant height. The shortest…

A: Polygenic inheritance is the inheritance of a phenotypic characteristic (trait) that is controlled…

Q: In rabbits, the color of body fat is controlled by a single genewith two alleles, designated Y and…

A: In rabbits, the genotype of gene controlling the color of body fat will be, In case of standard…

Q: Many genetic disorders exhibit locus heterogeneity. Define andgive two examples of locus…

A: Locus heterogeneity is a phenomenon in which a particular disease is caused by mutations in…

Q: Two different genes control the expression of kernel colour in Mexican black corn: a black pigment…

A: Given: B_D_ and B_dd = Black bbD_ = Dotted bbdd = Colorless

Q: The following pedigree illustrates the inheritance of ringed hair, a condition in which each hair is…

A: The condition in which a single dominant allele is responsible for causing the disease then the…

Q: Let’s suppose that a gene affecting pigmentation is found on the Xchromosome (in mammals or insects)…

A: Genes are the basic structural and functional unit of heredity. They carry coded genetic information…

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: In maize trisomics, n + 1 pollen is not viable. If adominant allele at the B locus produces purple…

A: The trisomic condition is condition in which the normal diploid species has one additional…

Q: What type of epistasis between locus A and B could be explained by the following biochermical…

A: Epistasis is known as non allelic interaction. Epistasis does not follow Mendel's laws.

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: 1. Converted the expected phenotypic ratio from Part A into the expected probability for each of the…

Q: For a certain gene in a diploid organism, eight units ofprotein product are needed for normal…

A: a.  We cannot expect the mutation to be recessive,it may rather be dominant.This is an example of a…

Q: Gene S controls the sharpness of spines in a type of cactus. Cactuses with the dominant allele have…

A: Dominant traits- S for sharp spines, N for long spines Recessive traits- s for dull spines, n for…

Q: Another recessive mutation in Drosophila, ebony (e), is on anautosome (chromosome 3) and causes…

A: The scalloped wing phenotype is produced due to a recessive mutation in the X chromosome. The…

Q: When many families were tested for the ability to tastethe chemical phenylthiocarbamide, the matings…

A: Genetic is the branch of science that deals with genetic material like genome, genes, DNA, and…

Q: Two different genes control the expression of kernel colour in Mexican black corn: a black pigment…

A: The genotypic ratio and the phenotypic ratio are not always the same. The genotypic ratio means the…

Q: Two alleles at one locus produce three distinctphenotypes. Two alleles of two genes lead tofive…

A: Alleles of a gene are either dominant or recessive. In certain cases, alleles exhibit incomplete…

Q: . The genotype r/r ; p/p gives fowl a single comb, R/− ; P/−gives a walnut comb, r/r ; P/− gives a…

A: Comb in poultry is defined by two genes usually designated as R and P.  When only the dominant…

Q: In a cross in Drosophila involving the X-linked recessive eye mutationwhite and the autosomally…

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

Q: FRR) were crossed to pure breeding plants with yellow and oval fruit (ffrr). The red and round F1…

A:

Q: In aliens, the genes A, B, C, D and E are dominant to their respective alleles a, b, c, d and e:…

A: A dominant allele is one that expresses itself in homozygous as well as heterozygous condition. A…

Q: Q1: Which two children in this pedigree have cystic fibrosis? How do you know? Q2: Does either parent…

A: Cystic fibrosis is an autosomal recessive disorder.

Q: . In corn, the allele A allows the deposition of anthocyanin (blue) pigment in the kernels (seeds),…

A: The genes that can be inherited together and lies close to one another on the same chromosome are…

Q: In mice, the AYallele of the agouti gene is a recessivelethal allele, but it is dominant for yellow…

A: Genes are the fundamental unit of inheritance. They are the governing factors which determines the…

Q: Red eyes is the wild-type phenotype in Drosophila, and severaldifferent genes (with each gene…

A: Drosophila melanogaster is a common fruit fly. It is most common subject used in majority of genetic…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: A test cross is a way to explore the genotpye of an organism. When a dominant phenotype i.e…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: In tomato plants, the round fruit shape is dominant over the oval fruit shape. The allele for round…

Q: Three recessive traits in garden pea plants are as follows: yellowpods are recessive to green pods,…

A: A gene is a unit of genetic material and alleles are the alternative form of genes present on the…

Q: In pea plants, the allele for round seeds (R) is dominant and the allele for wrinkled seeds (r) is…

A: He discovered that traits/ characters are inherited as discrete factors which were later known as…

Q: . In a particular kind of ornamental flower, the wildtype flower color is deep purple, and the…

A: Inheritance is the process of transmitting the traits from parent to offspring. Traits of an…

Q: A researcher crosses two white-flowered lines ofAntirrhinum plants as follows and obtains the…

A: Introduction  Sir Gregor Mendel is known as the Father of Genetics. He was the pioneer scientist who…

Q: Gene S controls the sharpness of spines in a type of cactus. Cactuses with the dominant allele have…

A: Cactus  Cactus are the plant that grows in water scarcity conditions. They are plant from the group…

Q: In onions, presence of gene C causes production of an enzyme which catalyzes the production of…

A: "Inheritance" is the process through which a child gets genetic information from his or her parents.…

Q: In Drosophila, the autosomal recessive dp allele ofthe dumpy gene produces short, curved wings,…

A: Since you have posted a question with multiple sub-parts, we are answering only first two for you.…

Q: In mice, the wild-type coat color, agouti (AA) [left mouse], is dominant to solid-colored, black fur…

A: Some phenotypes are controlled by more than one genes and this is known as polygenic inheritance. In…

Q: . The production of pigment in the outer layer of seedsof corn requires each of the three…

A: Let Pr be purple, pr be red and acr be yellow. Part A. The phenotype of parent  P1 = AA CC RR prpr…

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.