Another recessive mutation in Drosophila, ebony (e), is on anautosome (chromosome 3) and causes darkening of the bodycompared with wild-type flies. What phenotypic F1 and F2 maleand female ratios will result if a scalloped-winged female withnormal body color is crossed with a normal-winged ebony male?Work this problem by both the Punnett square method and theforked-line method.

Q: In Drosophila, the sepia mutation (se, chromosome 3, position 26) results in dark brown eyes, while…

A: Introduction :- D. melanogaster is an ideal model organism due to a variety of characteristics. The…

Q: In Drosophila, a fully heterozygous female with the X-linked recessive genes a, b, and c (not…

A: A fully heterozygous female with x linked gene a, b, c was mated with male a, b, c. Parental cross -…

Q: In Drosophila, a heterozygous female for the X-linkedrecessive traits a, b, and c was crossed to a…

A: Genetics is a branch of biology that deals with genes, heredity, and variation. Heredity purely…

Q: In fruit flies, the autosomal recessive mutation pr causes brown eyes whereas the cn mutation causes…

A: A genetic characteristic or disease can be handed down from one parent to the next through autosomal…

Q: In Drosophila,, the curled mutation (cu, chromosome 3, position 50.0) results in wings that curl up,…

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

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: A Drosophila embryo dies during early embryogenesis due to arecessive allele of a maternal effect…

A: Phenotypes and genotypes represents the traits that gets passed on from the parents to the progeny.…

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: In Drosophila, the sepia mutation (se, chromosome 3, position 26) results in dark brown eyes, while…

A: Suppose, se is the recessive mutated allele and it's wild type dominant form is se+ allele…

Q: A (Only zygotes with balanced genomes will survive to adulthood. What proportion of F1 zygotes have…

A: A unique organism with an intriguing genetic configuration evolved from a population of Drosophila…

Q: In Drosophila, a cross was made between a yellow-bodied male with vestigial wings and a wild-type…

A: Genes can be defined as an important unit of inheritance. A pair of genes is called allele. These…

Q: In Drosophila, M. Green found a singed allele (sn) withsome unusual characteristics. Females…

A: Each gene in the DNA that is coding for a specific protein/trait has two variants called alleles.…

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

A: In Drosophila melanogaster , there as three types of genes :  A ) White eye ( w )  B ) Yellow body (…

Q: Eye color in Drosophila is determined by a gene is on the X chromosome, with the red-eye allele…

A: Each gene possesses two forms of alleles. These forms include a dominant allele and a recessive…

Q: The phenotype of vestigial (short) wings (vg) in Drosophila melanogaster is caused by a recessive…

A: It is given that the vestigial wing and hairy body are caused by recessive wings. These are encoded…

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: A geneticist is using a three-point testcross to map three linked Drosophila recessive mutations…

A: In our analysis of genetic mutations, it is imperative to calculate recombination frequencies to…

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

A: For a variety of reasons, using male sterility decreases the cost of hybrid seed production. It…

Q: In Drosophila, raspberry eyes (ras) is a sex-linked trait (X chromosome) and recessive. Polished…

A: Suppose, the allele P (dominant) is wild type eyes and allele p (recessive) is responsible for…

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 gene involved with body colour in this species of fruit fly is located on the non-homologous…

A: The Gene for Eye Color in Drosophila: Red vs. BrownIntroductionThis species of fruit fly possesses a…

Q: Imagine that you set up a three-point mapping cross to determine the order of three X-linked genes.…

A: This is the case of three point test cross. The crossing occurs between the heterozygous parent for…

Q: What gametes, and in what frequencies, are produced by a female Drosophila of genotype A B / a b…

A: Drosophila, sometimes known as fruit flies, has been used as a model organism in genetic study for…

Q: A mutation of Drosophila has a wing condition known as beaded. When a beaded fly was crossed with a…

A: The wildtype flies have long and full wings. The mutated flies have beaded wings that can be due to…

Q: In Drosophila the genes forked bristles (f and f+) and vermilion eyes (v and v+) are ~24 m.u.  apart…

A: During meiosis, genes between homologous chromosomes are transferred in genetic recombination, which…

Q: The production of eye-color pigment in Drosophila requires the dominant allele A. The dominant…

A: P   red-eye female X white-eye male F1 purple-eyed females        and       red-eyed males…

Q: You are studying tail length in a species of mice, where some mice have long tails and some have…

A: Genetics is the study of genes, their interactions, and the effect of environment on genes. Broadly…

Q: Drosophila females of wild-type appearance but heterozygous for three autosomal genes are mated with…

A: Let us represent the alleles responsible for wildtype eyes, wildtype bodies, and wildtype thoraxes…

Q: Female Drosophila with cinnabar eye (cn) and vestigal wings (vg) were mated to males with roof wings…

A: Answer

Q: Female flies with white eyes and miniature wings (both X-linkedrecessive traits) were crossed to…

A: Chromosomal composition of these rare females will be – XXY. Both the X chromosomes must be coming…

Q: Z00 wnine, transparent 49 pink, transparent pink, white, transparent 46 206 pink, white 205 pink 48

A: 1). pk and wh   Phenotype Genotype Number white + wh + 47 wild +++ 200 Pink, opaque pk+op…

Q: Black body (b) and purple eye (pr) are recessive autosomal mutations in Drosophila. Bridges are…

A: b - allele for black body - recessive pr - allele for purple eye - recessive B - wild type for body…

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: Male Drosophila from a true-breeding wild-type stock were irradiated with X-rays and then mated with…

A: J. Muller first showed in his experiment that exposure to certain dose of X-rays higher than the…

Q: In Drosophila, a cross was made between females and wild-type males. The female parents expressed…

A: In Drosophila , there are three types of trait :-  A ) Trait for wing  B ) Trait for body colour  C…

Q: A standard three-point mapping is conducted for recessive mutations in autosomal genes purple eye…

A: Chromosome mapping first introduce the great scientist T.H. Morgan. By the help of recombinant…

Q: Miniature wings (Xm) in Drosophila result from an X-linked allele that is recessive to the allele…

A: Given: Miniature wings Xm - recessive Long wings X+ - dominant Male parent - long wings Female…

Q: The mutant genes for vestigial wings and singed bristles are approximately 30 map units apart on…

A: Each gene has two alleles, one is a dominant allele and another is a recessive allele. If the mutant…

Q: IN DROSOPHILA, AN X-LINKED RECESSIVE MUTATION, Xm CAUSES MINIATURE WINGS. LIST THE F₂ PHENOTYPIC…

A: The cross involved here is X linked which means that mutation in one of the X chromosomes  in…

Q: In Drosophila, a female with three recessive traits, miniature wings, (m), ebony body (e) and rough…

A: This question is about a genetic problem involving the inheritance of traits in Drosophila flies.…

Q: Female fruit flies homozygous for the X-linked white-eye alleleare crossed to males with red eyes.…

A: Drosophila melanogaster is a common fruit fly. It is most common subject used in majority of genetic…

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…

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.