Progeny phenotypes dt D+ Cross ở Trf-ab Trf-b Trf-ab Trf-b Total d* Trf" d Trf d Trfb 32 3 21 62 d Trft d Trf" d Trfb dt Trf" 16 38 d Trfb d* Trf" 3 d Trfh 35 9. 4 30 78 d Trf d Trf d Trf d Trf d* Trf" 21 3 2 19 45 d Trf d' Trf d Trf" d Trf d Trf d* Trf" d Trf" 29 22 64 d Trft 6. d Trf 4 14 11 0 29 20 Transferrin is a blood protein that is encoded by the transferrin locus (Trf). In house mice, the two alleles at this locus (Trf and TrP) are codominant and encode three types of transferrin: Genotype Phenotype Trf / Trf Trf / TrP Trp / Trp Trf-a Trf-ab Trf-b The dilution locus, found on the same chromosome, determines whether the color of a mouse is diluted or full; an allele for dilution (d) is recessive to an allele for full color (d"): Genotype Phenotype d* d* d* (full color) d* (full color) d* d dd d (dilution) Donald Shreffler conducted a series of crosses to determine the map distance between the transferrin locus and the dilution locus (D. C. Shreffler. 1963. Journal of Heredity 54:127-129). The following table presents a series of crosses carried out by Shreffler and the progeny resulting from these crosses.

Q: What is crossing over, when does it occur, and what is its significance

A: Genes located close together on the same chromosome are transmitted as a single unit to the daughter…

Q: What do monohybrid crosses reveal?

A: A cross that involves single pair of contrasting characters is known as Monohybrid cross.

Q: What is crossing over, when does it occur and what is its importance?

A: A chromosome is an organized package of DNA found in the nucleus of the cell. Different organisms…

Q: What is cross-fertilize?

A: Fertilization is the process by which the gametes (male gamete and female gamete) fuse with each…

Q: What causes nonreciprocal translocation?

A: All cellular systems are controlled by proteins. Proteins are synthesized by the cell by a process…

Q: How do translocations in which no genetic information is lost or gained produce phenotypic effects?

A: Translocation is caused Due to separation of a chromosome segment and its union to a nonhomologous…

Q: What is the karyotypefound in Down syndrome?

A: During the most recent years, Down disorder has been the focal point of uncommon consideration. Down…

Q: What occurs during crossing over?

A: Cell division is a process by which a cell divides into two or more daughter cells. cell division…

Q: Are all reciprocal translocations likely to result in sterility? How can one result in normal…

A: Reciprocal translocation is one of the two types of chromosome translocation. Chromosome…

Q: What are the products of crossing over?

A: The process in which parent cells divide and produce two or more daughter cells is referred to as…

Q: Draw a Punnett square for the dihybrid cross. There are two known alleles of gene occupying a…

A: Dihybrid cross involves two genes in a cross. That's why the two traits are involved in this cross.

Q: What is the effect of linkage and recombination on gamete genotypes?

A: Nucleus is a main controller of the cell which comprises of thread like structure known as…

Q: What are the Results of Correns’s Mirabilis Crosses?

A: A cross is a controlled breeding experiment in which two organisms of desired or considered trait…

Q: How does a chromosomal duplication occur?

A: When a part of chromosome is present in two copies or duplicated, it is known as duplication. This…

Q: In fruit flies, eye color is an X-linked trait.  Red eyes (XB) are dominant to maroon eyes (Xb). A…

A: An alternate form of a gene is called alleles.  The dominant allele is represented by a capital…