Interspecification crosses are rare in nature and intergenic crosses almost unknown.why?

Q: What is recombinant fraction and genetic distance and their major differences

A: Chromosomes have a number of linked genes. These genes are different and code different proteins and…

Q: A Neurospora colony at the edge of a plate seemed to be sparse (low density) in comparison with the…

A: The mutation is any alteration that occurs in the nucleotide sequence due to impaired DNA copying,…

Q: A misaligned crossover between two homologous chromosomes usually results in:

A: Crossing over is the process of exchange of gene segments between the non sister chromatids of…

Q: In corn, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the…

A: Hi dear, here's your answer what you want. Can you please give me an upvote for this answer.

Q: When two plants belonging to the same genus but different species are crossed, the F1 hybrid is more…

A: John Ray gave the term species in his book Historia Generalis Plantarum. A species is a group of…

Q: We will see an MI pattern when: There is crossover between two centromeres There is crossing over…

A: Haploid organisms such as Neurospora and other fungi are helpful in the detection of linkage and…

Q: You continue your experiments with the black mutation on chromosome II. You cross the reciprocal…

A: Introduction: The most advancing branch of science is genetics. The study of genetics comprises…

Q: How can I Explain  with diagram how mitotic crossover (recombination) lead to cancer.

A: Mitotic recombination is a main source of the genetic variability of primitive organisms. It…

Q: What phenomenon explains why the maximum percentage of recombinant offspring does not exceed 50%?

A: The pieces of DNA are broken then recombined and new combination of alleles are produced. This…

Q: Known deletions (1–6) were crossed to each other. The following chart shows which crosses produced…

A: After crossing of Point mutations that is ( a-f) with known deletions (1-6) ,  We get the greatest…

Q: Which of the following can explain the observation that two pureline mutants both showing identical…

A: A mutation is a change in the structure of a gene, the unit of heredity. Genes are made of…

Q: A serious genetic disorder results in dwarfism of the condors. Although this might not have…

A: Gene is the segment of DNA responsible for heredity. Two or more alternative forms of genes…

Q: You are a gene hunter, trying to find the genetic basis for a rare inherited disease. Examination of…

A: It is given that the rare inherited disease is co-inherited with the markers on the chromosome 7 for…

Q: n a fox ranch in Scandinavia, a mutation arose that yielded a “platinum” coat color. The platinum…

A: A breeders are not able to produce a pure- breeding platinum foxes even when they tried to cross two…

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: A crossover has occurred in the bivalent shown figure.If a second crossover occurs in the same…

A: Crossing over is the exchange of chromosome DNA segments between non-sister chromatids which takes…

Q: Consider three genes on the same chromosome, Gene A, Gene B and Gene C. You perform three factor…

A: As 3 genes are located on the same chromosome then the crossing over event is very rare.

Q: What does the interference tell us about the effect of one crossover on another?

A: Crossover is the phenomenon in which two homologous chromosomes, or  instances of the same…

Q: Does a molecular marker have to be polymorphic to be useful in physical mapping studies? Does a…

A: Molecular markers are fragments of deoxyribonucleic acid (DNA), which are associated with a specific…

Q: Which of the following statement is TRUE? Recombinants cannot be formed without crossovers between…

A: Two genes characterizing two different traits of an organism are located on two different…

Q: If the G locus were 50 or more map units from the centromere, what types and proportions of gametes…

A: Recombination Recombination is an event in cell division(meiosis and mitosis) in which the exchange…

Q: A X cross, is conducted when an organism with the dominant phenotype and unknown genotype is crossed…

A: This is the test cross, where an organism with dominant phenotype but unknown genotype is crossed…

Q: Nicotiana glutinosa (2 n = 24) and N. tabacum (2 n = 48) are two closely related plants that can be…

A: There are two species of Nicotiana, namely- Nicotiana glutinosa (2n = 24) and Nicotiana tabacum (2n…

Q: How to build a genetic map? What is necessary? How does it relate to the physical distance? i. If I…

A: Genetic map is a physical representation of the order of genes in a chromosome. It represents the…

Q: The two forms of recombination are general and _____________.

A: Recombination is the process of the formation of new DNA molecules from two parental DNA molecules.…

Q: С. What are the expected genotypic ratio, and phenotypic ratio of green to red if: i. the Fi's are…

A: a person or strain whose chromosomal complement is made up of four copies of a single genome as a…

Q: Taking into consideration the following figure, which second crossover would have to occur (number…

A: Crossing over of chromosomes is the genetic material exchange which occurs among the two homologous…

Q: Difference between out crossing and cross breeding?

A: Outcrossing and crossbreeding are types of natural breeding. They aim to increase the yield of the…

Q: A cross between two heterozygous individuals in one gene resulted in one phenotype, explain?

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

Q: The same team of researchers sets up an additional cross with this same population. They cross two…

A: Dominant allele always express themselves in heterozygous condition.

Q: "non parental" phenotypes in his dihybrid crosses. How can you explain this?

A: Two laws of Mendel:- 1) Law of Segregation/ Law of purity of gametes- Monohybrid cross. 2) Law of…

Q: Why do test- crosses give a 1:1:1:1 ratio?

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

Q: Punnett Square/Mono-Hybrid Cross:   In cattle, black coat color is dominant to red coat color.  Both…

A: black coat color is dominant =B red coat color is recessive = b parents are heterozygous. mother =…

Q: When you testcross the offspring of ccWW x CCww, you get the following results: CcWw = 135 Ccww =…

A: A test cross is a cross between an individual organism with a dominating phenotype but uncertain…

Q: corn, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the male…

A: Hi dear, here's your answer what you want. Can you please give me an upvote for this answer.

Q: n Figure 4-19, what would be the RF between A/a andB/b in a cross in which purely by chance all…

A: ANSWER: Recombination frequency (θ) is the frequency with which a single chromosomal crossover will…

Q: You are looking at a maternal effect gene that comes in 2 alleles, B (brown) is dominant and b…

A: BB (female)   ×   bb (male) For this cross all the progenies will be heterozygous for the gene with…

Q: What evidence led to these decisions? There should be at least one line per pair

A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…

Q: We will see an MII pattern when: There is no crossover between a gene and its centromere There is…

A: Crossover is the process of the exchange of genetic segments that occurs between homologous…

Q: A tomato geneticist attempts to assign five recessivemutations to specific chromosomes by using…

A: SECONDARY trisomics, or persons who have one isochromosome in addition to their regular somatic…

Q: i) What are reciprocal crosses?  ii) Provide an example of the reciprocal crosses this scientist…

A: X - linked trait  The trait which are transferred in association with x- chromosomes are known as…

Q: What is the cross between the progeny of F1 and the homozygous reccessive parent called? How is it…

A: Introduction  Monohybrid cross deals with one character controlled by one pair of alleles such as…

Q: Geneticists often carry out reciprocal crosses when they are studying the inheritance of traits. Why…

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

Q: A diploid plant is heterozygous for two linked genes, A and B. Crossovers between the two genes…

A: Unlinked genes are those that are present on separate chromosomes, sometimes far apart, but on the…

Q: Why is a 50 percent recovery of single-crossover products theupper limit, even when crossing over…

A: The exchange of genetic material that happens in the germline is referred to as crossing over.…

Q: In sunflowers, two plants heterozygous for mutant (recessive) alleles b and e are crossed. For each…

A: Let,  B and E be the dominant alleles and b and e be the recessive alleles. Each parent has…

Q: Alloploids are produced by crosses involving two different species. Explain why alloploids may be…

A: The condition in which cells consist of more than two homologous sets of the chromosome is called…

Q: In com, male sterility is controlled by maternal cytoplasmic elements. However, the presence of  a…

A: Cytoplasmic male sterility is a phenomenon in which interactions between mitochondrial and genetic…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.