The mutant genes for vestigial wings and singed bristles are approximately 30 map units apart on chromosome II in Drosophila. Assume that a vestigial-winged female was mated to a singed-bristle male, and that the resulting F1 phenotypically wild type females were mated to vestigial singed males. Of 1000 offspring, which phenotype class would represent the product of crossing over between the genes, and how many would you expect? a) vestigial, 300 flies b) vestigial, 150 flies wild type, 300 flies d) singed, 150 flies e) vestigial, singed double mutants, 150 flies

Q: One of the X chromosomes in a particular Drosophila female had a normal order of genes but carried…

A: Crossing over: It occurs during prophase I and involves the exchange of genetic material between…

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: An individual  heterozygous for a reciprocal translocation possesses the following chromosomes:  A B…

A: Translocation is caused by the separation of a chromosome segment and its union with a…

Q: A cross in Drosophila melanogaster involved the recessive X-linked genes for white eye (w), yellow…

A: The genotype expressed by most number of offspring is the parental genotype. Here, + y + and w + ct…

Q: were observed and used to make a map of these genes.  Calculate the interference.…

A: Answer. The linkage of the genes in a chromosome can be in the form of a genetic map or linkage map.…

Q: Imagine Drosophila genes C, D, and E are autosomal genes located close to each other on the same…

A: If many genes are located on the same chromosome then the crossing over between them will be reduced…

Q: One of the X chromosomes in a particular Drosophila female had a normal order of genes but carried…

A: Inversion usually occurs in the prophase 1 in which two break can occur in the area and can thus…

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: Cinnabar eyes (cn) and reduced bristles (rd) are linked autosomal recesive characters in Drosophila…

A: According to the question, The given cross is, cn+cn+rd+rd+ (wild type female) X   cncnrdrd (reduced…

Q: It is assumed that in Drosophila the following genotypes produce phenotypes. َA- B- = Red color A-…

A: Genetics may be a discipline of biology concerned with the study of genes, genetic diversity, and…

Q: A phenotypically abnormal individual has a phenotypically normalfather with an inversion on one copy…

A:

Q: Bow-legs is hypothesized to be X-linked recessive trait in Drosophila melanogaster. The P1 virgin…

A: Introduction :- When the test statistic is chi-squared distributed under the null hypothesis, a…

Q: The orange coat color allele in cats is located on the X chromosome and is one of two genes…

A: The two variants of coat color found in cats are orange and black. The alleles responsible for these…

Q: A reciprocal translocation between chromosome 1 and 2 in Drosophila resulted in AB//CPQR and…

A: After reciprocal translocation, Chromosome 1 - AB//CPQR Chromosome 2 - MN//ODEF

Q: Karl and Hally Sax crossed Aegilops cylindrica (2 n = 28), a wild grass found in the Mediterranean…

A: Karl and Hally Sax conducted a cross between Aegilops cylindrical (2n = 28) and Tridcum vulgare (2n…

Q: Deduce the phenotypic proportions in the progeny of thefollowing crosses of autotetraploids in which…

A: Phenotypic proportion shows the ratio of offspring's combination genes and these are similar in the…

Q: You are given a Drosophila female that looks wild-type but is heterozygous for mutations in tan body…

A: Three-point cross: In genetics, the three-point cross is used to determine the distance between two…

Q: Vestigial wing is a recessive autosomal mutation in the fruit fly Drosophila melanogaster. Wild-type…

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

Q: In Drosophila, three autosomal genes have the following map:20 m.u. 10 m.u.a b ca. Provide the data,…

A: Gene mapping is the way in which a genetic map is designed that will use recombination frequency…

Q: The phenotype of crooked wings (cw) in Drosophila melanogaster is caused by a recessive mutant gene…

A: The expected phenotypes as per the dihybrid phenotype ratio and their proportionate numbers out of a…

Q: In corn, the genes that determine seed color and coat are both located on chromosome 9.  Seed color…

A: This analysis of a corn dihybrid cross revealed that seed color and coat texture are controlled by…

Q: A cross is made in tomatoes between a female plant thatis trisomic for chromosome 6 and a normal…

A: In genetics, a cross is the result of mating two parents with different genes, resulting in…

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.