1. The recessive Drosophila mutation bobbed (b) is located on the X chromosome and causes short bristles. The recessive, autosomal mutation ebony (e) causes a dark body color. Male flies homozygous for bobbed bristles and ebony body were crossed with homozygous wild-type females. The F1 are intercrossed to produce the F2. Answer the following questions using the gene notation listed above. A. List the genotypes of the parental flies: Male Females B. List the genotypes of the F1 flies: F1 male F1 females C. List the expected genotypes and sexes of the F2 flies and their phenotypic proportions.

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: 1. In fruit flies, white eyes are X-linked recessive mutation. If a female who is a carrier of the…

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

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

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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: parent Lotye ature ature Female parent phenotype long long long miniature long mm X X Male offspring…

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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: 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: Drosophila melanogaster (D. melanogaster) is a species of fruit fly frequently used by researchers…

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Q: 6. In Drosophila melanogaster, the wild-type eye colour is dark red. A pure-breeding mutant strain…

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

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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: 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: 3) In the snail Capaea nemoralis, an autosomal allele causing a banded shell (B®) is recessive to…

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Q: The genetic map was based on crosses in Drosophila involving the three sex-linked genes a, b and c.…

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Q: THEME 3: In Drosophila recessive mutants called a, b, c, and d all have the same phenotype; namely,…

A: Wild type individuals result when the Plus sign is indicated and this Plus sign occurs when the two…

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

A: Answer

Q: three recessive genes a, b, and c in the model plant Arabidopsis are found to be linked on…

A:

Q: In Drosophila, the recessive mutations hairy (h) causes a hairy body and curled (cu) causes curled…

A: h causes a Hairy body and cu causes curled wings.Recombination causes the exchange of genetic…

Q: What is/are the phenotypes of the recombinant offspring of the F2generation?a. red eyes, long…

A: DNA recombination entails the sharing of genetic material between many or different chromosome…

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

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

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Q: 1 II 1 2 a) Assume that colour is controlled by a single sex-influenced gene where green is…

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Q: Consider an example of two autosomal recessive gene a and b where a heterozygote (AaBb) is…

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

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

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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: (a) (b) (c) Parents of cross orange, crossveins orange, crossveins red, crossveins red,…

A: Answer a) Because no Red eye offsprings  may be produced from parents who have orange eyes, orange…

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: n corn, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the…

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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: In Drosophila, two genes w and s are X-linked and are 25 map units apal. heterozygous female fly…

A:

Q: 6). To investigate the genetic control of locomotive behavior in the diploid nematode,…

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Q: In Drosophila, an X-linked recessive mutation, (s) causes irregular wing margins. Give the…

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Q: a. In Drosophila, crosses between F1 heterozygotes ofthe form A b / a B always yield the same ratio…

A: Since you have posted a question with multiple sub-parts, we are answering only first one for you.…

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

A: The allele for miniature wings is represented with w And the allele for long wings with + The allele…

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, an X-linked recessive mutation, Xm causes miniature wings. List the F2 phenotypic…

A: Inheritance patterns are broadly of two types :- autosomal and sex-linked. They are further of two…