Colored aleurone in the kernels of corn is due to the dominant allele R. The recessive allele r, when homozygous, produces colorless aleurone. The plant color (not the kernel color) is controlled by another gene with two alleles, Y and y. The dominant Y allele results in green color, whereas the homozygous presence of the recessive y allele causes the plant to appear yellow. In a testcross between a plant of unknown genotype and phenotype and a plant that is homozygous recessive for both traits, the following progeny were obtained: colored, green 88 colored, yellow 12 colorless, green 8 colorless, yellow 92 Explain how these results were obtained by determining the exact genotype and phenotype of the unknown plant, including the precise arrangement of the alleles on the homologs.

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: In peas, tall (T) is dominant to short (t), red flowers (R) is dominant to white flowers (r), and…

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

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

A: Answer: DIHYBRID CROSS : It is the cross made between two traits of an individual.  Phenotypic…

Q: In corn, a colored aleurone is due to the presence of an R allele; r/r is colorless. Another gene…

A: The aleurone grain is the protein body which is a specialized dry vacuole where storage proteins…

Q: You are given a pea that produces round, yellow seeds (both dominant traits, alleles R and Y), but…

A: Given  Unknown plant phenotype - round yellow  Crossed with true recessive plant    Symbol used…

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: You have been tasked by a pharmaceutical company to generate a novel strain of Cannabis sativa for…

A: The union of male and female gametes and/or nuclei from the same haploid, diploid, or polyploid…

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

A: Dihybrid cross: A dihybrid cross occurs between two organisms that are identical hybrids for a given…

Q: In lizards, the mutants green skin (g) and flaky legs (f) are both recessive and assort…

A: The chi-square analysis was utilized to test that alleles that are segregating based on Mendelian…

Q: A coat color of a horse is governed by many different gene pairs. Dominant B will give the horse a…

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

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

A: The test cross is another fundamental tool devised by gregor mendel. In its simplest form, a test…

Q: In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles…

A: Dominant allele  The allele which mask or override the character of other gene which present in the…

Q: In a testcross, the parent that is homozygous recessive for the genes being studied is called the…

A: ANSWER;-c)option C is correct. Explain;- A test cross is to test the genotype of an unknown sample…

Q: In the pea plant, the green pod color allele is dominant to the yellow pod color allele. Set-up a…

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

Q: Colored aleurone in the kernels of corn is due to the dominant allele R. The recessive allele r,…

A: Gene is a nucleotide sequence that forms the basic unit of heredity. An allele is a variant form of…

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: In Bean plants two genes are defined below with the lower case letter indicating the recessive…

A: A test cross is when the f1 hybrid is crossed with its homozygous recessive parent.

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: The shape of a pumpkin is determined by the action of two genes A and B. The recessive forms of…

A: Given  When both alleles are heterozygous a disc-shaped pumpkin is produced.  homozygous dominant at…

Q: In boreal daisies, flower color is controlled by a gene at locus B. Daisies with at least one…

A: It is a typical mendelian cross. Where a dominant allele is expressed oven a recessive allele. The…

Q: In squash, fruit color is determined by one gene and fruit shape by another independently…

A: A genotype is the set of genes that make up an individual.

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: A child with Type O blood is born to a mother with Type A blood.   What is the genotype of the…

A: The genotype is a combination of a gene and the phenotype is the observable characteristic. The…

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

A: The test cross is another fundamental tool devised by Mendel . In its simplest form, a test cross is…

Q: A researcher observes that when two heterozygous plants with red flowers are crossed, the resulting…

A: Mendel stated three laws. They are:- LAW OF DOMINANCE -This states that the character is controlled…

Q: The first step of the dihybrid cross is to mate the P generation: A PUREBRED (homozygous) plant…

A: The Punnett square is a diagram that is used to predict an outcome of a particular o breeding…

Q: A cross was performed using Drosophila melanogaster involving a female known to be heterozygous for…

A: An organism has phenotype and genotype. Phenotype is the observable characteristics and genotype is…

Q: . Snapdragons (a type of flower) are incompletely dominant for color; they have phenotypes red,…

A: In incomplete dominance both of the alleles produce their own phenotypic effect and results in a…

Q: In tomatoes, tall plant (D) is dominant over dwarf plant (d) and smooth fruit (H) is dominant over…

A: The two genes are involved in dihybrid cross.

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

A:

Q: The M allele encodes a nonfunctioning protein that will lead to death in a homozygous individual.…

A: Introduction The genotypic ratio is a proportion that depicts the various genotypes of offspring…

Q: n corn, a colored aleurone is due to the presence of an R allele; r/r is colorless. Another gene…

A: Barbara McClintock’s report that bits of DNA could jump around and integrate themselves into new…

Q: In tomatoes, tall plant (D) is dominant over dwarf plant (d) and smooth fruit (H) is dominant over…

A: In case of Tomato plant :-  A ) Trait I is height of tomato :- In this , tall ( D ) is Dominant…

Q: Sometimes, two alleles are neither dominant nor recessive, therefore, both alleles are expressed…

A: Introduction :- A link between two variants of a gene is known as codominance. Each parent gives…

Q: Kernel color in wheat is controlled by 2 pairs of genes (AABB). Determine the color of each…

A: The inheritance of kernel color in wheat is controlled by two genes. These are A and B genes.

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: In shorthorn cattle, the genotype RR causes a red coat, the genotype rr causes a white coat, and the…

A: Incomplete dominance is when a dominant allele, or form of a gene, does not completely mask the…

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: In boreal daisies, flower color is controlled by a gene at locus B. Daisies with at least one…

A: The flower color in boreal daisies is controlled by the gene B. The B allele for blue petal is…

Q: Two gene loci, A and B, are on separate chromosomes and alleles A and B are dominant over alleles a…

A: Dihybrid cross Is a mating experiment involving two creatures that are genetically identical in two…

Q: In cucumbers, orange fruit color (R) is dominant over cream fruit color (r). A cucumber plant…

A: Homozygous trait refers  to a trait that produces same gametes and heterozygous is the trait that…

Q: A diploid plant has red flowers, heavy seeds and large leaves. The plant is a heterozygous for the…

A: The presence of two different alleles at a particular gene locus is called heterozygous.

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: 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: With regard to the T and t alleles, explain what the wordsegregation means.

A: Step 1 Alleles are the various form of a gene which are formed at the same place or locus on…

Q: Dominant allele R in corn results in purple kernel, while recessive allele r results in pearl white…

A: The set of alleles for a given trait in an organism is called genotype, while the observable traits…

Q: A genetic engineer is going to cross two watermelon plants to produce seeds for a spring planting.…

A: Mendel has described characteristics of the pea plant as expressed characteristics or latent…

Q: Which of the following is NOT a reason that a testcross is a useful technique when studying the…

A: Test cross is the best experiment done by the father of genetics (Gregor Mendel) on the garden pea…

Q: In boreal daisies, flower color is controlled by a gene at locus B. Daisies with at least one…

A: Given: Blue petals = BB/ Bb Yellow petals = bb

Angiosperm Reproduction

The process of sexual reproduction in flowering plants is known as angiosperm reproduction. In flowering plants, reproduction begins with pollination, or the transfer of male gametes (pollen) from the male reproductive organ (anther) to the female reproductive organ (pistil), and ends with fertilization of the female gametes (egg), which produces a zygote, which then grows to become a mature plant.