You collected the following results from a test-cross you set-up using fruit flies. 52 wildtype flies, 438 flies with cinnabar coloured eyes, 467 files with vestigial wings and 43 flies with both cinnabar coloured eyes and vestigial wings. How many total flies are considered recombinant?

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

A: Need to find the recombination frequency between the two genes.

Q: Consider two loci A and B that are 30 cM apart on chromosome 1 in the fruit fly. A paracentric…

A: There are two types of inversions. The paracentric and pericentric. In a paracentric inversion,…

Q: After analyzing data from a three-point cross she has lost her lab manual. The only thing she can…

A: * Given that *Interference is 0.68 * Three double cross over progeny * And distance between genes is…

Q: student crossed a female worm homozygous for the dpy-17 e164 allele with a wild-type male worm…

A: Chi square test is a statistical test which is used to check whether there is significant difference…

Q: Consider the first category of test-cross offspring shown in figure 8.2 (+b, LS). Consider also that…

A: In the test-cross in question, heterozygous female flies with the genotype +b, LS were used. In…

Q: Two haploid strains of S. cerevisae (yeast) are crossed. One has the genotype ABC and the other abc.…

A: Introduction :- A cell with a single set of chromosomes is referred to as haploid. The number of…

Q: What is mitotic recombination? A heterozygous individual (Bb)with brown eyes has one eye with a…

A: Mitosis is the process of somatic cell division. The union of the egg and sperm forms the zygote…

Q: Cross Cross A Cross A Cross B Cross B Phenotype F1 generation F2 generation F1…

A: The objective of the question is to determine the genotypes of the flies in different crosses and…

Q: most tests of genetic linkage, the number of double crossovers is less than the number expected due…

A: Cross over events occurs during meiosis which which increases variation among the games and when…

Q: In the sample data from Sordaria shown in the picture: Count the total number of first and second…

A: the total number of crossing over and the total number of non-crossing over indicates the total…

Q: "Gametes produced form the F1 generation offspring having genotype a+ b+ / a b = 40 % a+ b+, 40 % a…

A: F1 generation cross between a+b+/a+b+ and ab/ab  Allele ab ab a+b+ a+b+ /ab a+b+ /ab a+b+…

Q: You will compare the morphological traits of wild and mutant flies. Complete Table 1, recording the…

A: Genetics is the field of biology concerned with the study of genes, inheritance, and genetic…

Q: Imagine that you have done a cross between two strains of yeast, one of which has the genotype A B C…

A: The scoring patterns in both tetrads indicate that recombination has occurred between genes A and C,…

Q: Which sample carries a derived X chromosome with a translocation due to ectopic crossover between…

A: In humans, sex is determined based on the presence or absence of sex chromosomes called the " X"…

Q: A geneticist identifies 117 recombinant offspring out of a total of 1,359. What is the recombination…

A: Recombination frequency is the frequency with which a single chromosomal crossover will take place…

Q: Genes D, E, F, and Gare located on the same chromosome. The recombination frequencies (RF) are as…

A: Recombination frequency gives us the proportion of offsprings that are not parental types but…

Q: In Drosophila, the allele for red eyes (p*) is wild-type and the allele for purple eyes (p") is…

A: Mendel's principle of independent assortment states that a dihybrid cross with unlinked markers…

Q: Growth Rate 80 red fast 88 purple slow 18 red slow 14 purple fast What is the distance…

A: Here, in 3rd and 4th case there are recombinant progenies because they have different growth rate…

Q: Consider the recombination frequencies data below from a series of two-point crosses that were…

A: The linkage group has linked genes.  during the process of gamete formation these genes stay…

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: P. D, and Q are three genes found on a single chromosome in greyhounds. The recombination…

A: The genetic map is defined as the arrangements of genes according to the recombination frequencies…

Q: phenotypes: 42 MP; 374 Mp; 367 mP; 27 mp.  What can you conclude from these data

A: Recombinant offspring are children that have a different allele combination to their parents.

Q: Suppose researchers studied the first chromosome of a new species and mapped three genes of…

A: The location of the genes on chromosomes is dependent on crossing over. The genes are linearly…

Q: Recombination frequencies between three loci in corn are shown in the following table: Loci…

A: Recombination frequency is the frequency with which a single chromosomal crossover will take place…

Q: |You are studying three traits in a goldfish variety; body colour (A or a), tail length (B or b) and…

A: Part B. A true breeding gold fish with long curly tail is crossed with a true breeding gold fish…

Q: Certain varieties of chrysanthemums contain 18, 36, 54, 72, and 90 chromosomes; all are multiples of…

A: The chromosome is the package of densely packed chromatin fibers with DNA and histone proteins. In…

Q: You observe that 50% of the offspring of a two-locus mapping cross are recombinant.  You could…

A: Recombinant or recombination frequency can only be upto 50% and can not be over 50%.  The largest…

Q: I am studying a pair of genes, A and B, that I think are both located on the same chromosome.  After…

A: The characters or traits are usually inherited from one generation to another via genetic…

Q: Use the data provided in the figure to calculate the recombination frequency between the two genes.…

A: Introduction: Recombination frequency is used for the measurement of the genetic linkage.…

Q: *If two genes are linked on a chromosome and over 50 map units apart, in theory you will not recover…

A: If two genes are located on the same chromosome then they are classified as linked genes. In this…

Q: You cross two plants and get the following results: Recombinant progeny type A: 43 Recombinant…

A: Crossing over is the exchange of genetic material between non sister chromatid of chromosome causes…

Q: You successfully isolate an hsf2/hsf2; hsf3/hsf3 double mutant stock. You cross this plant to an…

A: 40 plants

Q: (a) What types of progeny (fertile or semi-sterile, green or yellow-green) would you predict from…

A: The term translocation refers to a rearrangement that takes place when part of a chromosome move to…

Q: You have determined that the gene order for three linked genes being studied is CBA. The number of…

A: The frequency of recombination events between two genes (i.e., their degree of genetic linkage) is…

Q: On chromosome 4 in Nuerospora, the allele pyr-1 results in a pyrimidine requirement for growth.  A…

A: Distance between centromere and gene in a tetrad = 1/2 (#of recombinants / total # tetrads) × 100…

Q: pid plant is heterozygous for two genes on the same chromosome, A and B. overs between the two genes…

A: There is the occurrence of possibility of two types of gametes when two genes are present on the…

Q: You design Drosophila crosses to provide recombinationdata for gene a, which is located on the…

A: The drosophila is commonly called fruit fly, and it is commonly used for the study of genetics. The…

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.