In Drosophila, raspberry eyes (ras) is a sex-linked trait (X chromosome) and recessive. Polished eyes (pol) is autosomal and recessive. A raspberry, polished male is crossed with a homozygous wild-type female, producing an F1 in which both males and females are phenotypically wild-type. The F1 are inbred to form an F2. At what frequency (the number of total flies) would you expect to find a phenotypically raspberry (but not polished) male in the F2? 1. 1/16 2. 3/16 3. 1/4 4. 6/16 5.9/16

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A: Gregor Mendel was an Austrian scientist and biologist who proposed laws of inheritance and these…

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

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

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Q: A fruit fly that is heterozygous for the autosomal recessive mutations black (b) body, purple (pu)…

A: Formulas for three point test cross - A. Distance between two genes = (#progenies obtained by SCO…

Q: Two pure-breeding strains of flies are mated, and the F1 are intercrossed.  The first strain has…

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

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: Cross #1: P: Homozygous scarlet-eyed males F₁ Fs Homozygous brown-eyed females X 1072 Wild-type…

A: Answer :- a) Phenotypic ratio of F2 generation is 9 :3: 3: 1, for wild type eye, scarled eye,brown…

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

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Q: In the fruit fly Drosophila melanogaster, the trait of black body is due to a gene on chromosome 2…

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

Q: The non-wild-type alleles are k (clipped wings), l (long tail), and m (magical powers). The parental…

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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: h se g. +se+ + se g. ++g. h se + + + + h+g. h++ TOTAL Oh; 16.4 O se; 7.1 is the gene in the middle…

A: Genetic linkage is the tendency for genes located close to each other on the same chromosome to be…

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

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Q: Raspberry eyes (ras) is a sex-linked recessive trait in Drosophila. Eyeless (ey) is an autosomal…

A: Within this particular cross:The male individual exhibits the wild-type phenotype, indicating that…

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 the fruit fly, Drosophila melanogaster, eye color is affected by an X-linked gene with two…

A: The objective of this question is to predict the phenotypes of the F1 and F2 generations in a cross…

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 over occurs between the heterozygous…

Q: Both hemophilia (h) and favism (gd) are inherited as X-linked recessive traits. Hemophilia is an…

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

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Q: Cross #1: P: F1 Fs Homozygous scarlet-eyed males Homozygous brown-eyed females X 1072 Wild-type…

A:

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: n mice, the Ay allele of the agouti gene is recessive lethal, but it is dominant to wild type for…

A: Introduction  In genetics, dominance and recessiveness refer to the relationship between two or more…

Q: PURPLE VESTIGIAL DIHYBRID TESTCROSS In the parental generation, you mate a pure-breeding wild-type…

A: Recombination frequency is the number of organisms that are produced from a genetic cross. The…

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: We have crossed true-breeding flies today. Wild type to mutant. Their phenotypes were wt and vg se.…

A: In a genetic experiment involving true-breeding flies, we have crossed individuals with wild-type…

Q: In Drosophila melanogaster, ebony body color is determined by the e allele. The e+ allele produces…

A: In an incomplete dominance neither of the two alleles express themselves in a heterozygous…

Q: Two pure-breeding strains of flies are mated, and the F1 are intercrossed.  The first strain has…

A: The cross asked in the question is a dihybrid cross because two characters are involved here. First…

Q: Three recessive mutations in that affect eye colour, wing shape and body colourarew, m and b. The…

A: In Drosophila , w , m , b are three mutations that impact on eye colour , shape of wing and body…

Q: Please explain You are interested in the inheritance of two autosomal genes in a type of beetle.…

A: Introduction :-  There are two types of chromosomes, on the basis inheritance of same ( equally…

Q: Cross #1: P: F1 Fs Homozygous scarlet-eyed males Homozygous brown-eyed females X 1072 Wild-type…

A: 1. F2 generation phenotypic ratio is the chance of getting scarlet eyes, and  brown eyes is Half…

Q: In Drosophila, females heterozygous for the recessive alleles c, d, and e were crossed to males…

A: To determine the arrangement of the alleles in the heterozygous females, you need to consider the…

Q: In Drosophila, males from a true-breeding stock with raspberry-colored eyes were mated to females…

A: Drosophila:  Fly species belonging to the taxonomic order Diptera and family Drosophilidae include…

Q: The image shows a pair of homologous chromosomes from a single parent before gamete production. M1…

A: Genetic linkage is a study which shows us the  genes or alleles which are close to each other on a…

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.