Bow-legs is hypothesized to be X-linked recessive trait in Drosophila melanogaster. The P1 virgin females were, once again, homozygous wild type but the males were bow-legged. There were 52 wild type males and 67 wild type females in the F1 generation. The F2 generation contained 30 wild type males, 75 wild type females, 40 bow-legged males and no bow-legged females. Is this what is to be expected? Use chi-square to prove your position.

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: The Hairless phenotype in Drosophila is caused by a recessive mutation in the H gene. Wild-type…

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

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: How many gametes of differing genotypes can a female drosophila of genotype ABC/abc produce? How…

A: There will be same gametes will be developed in males and females. The explanation is given bellow.

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: You discover a new X-linked mutation for antenna shape in Drosophila (fruit flies) which produces…

A: Correct option is (b) 0       Step 1:  The Drosophila has been  X linked mutation which can…

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 fruit flies, the gene controlling bristle length is X-linked. Wild type flies have…

A: In this particular scenario, we’re examining a gene that controls bristle length, which is X-linked.…

Q: Illustrate the Parental and F1 cross

A: Trihybrid cross is between the two individuals of a species for studying inheritance of three pairs…

Q: What is the type of inheritance? What is known of the genotype of the male in the above cross? What…

A: Introduction  Genetics is frequently used to refer to heredity, which is the passing on of genetic…

Q: How many TsdB cells would you expect if chromosomal interference = 0? ____6-7_______ why is that…

A: A crossover event in one area of a chromosome diminishes the possibility of another crossover event…

Q: Why is the gene for eye color in drosophila present on the X chromosome ?

A: Gene is the basic unit of heredity for all life forms. It is transferable from one generation to its…

Q: In Drosophila, the gene w specifies eye color. Wildtype allele w+ gives red eyes and is dom…

A: In the fruit fly Drosophila melanogaster, eye color and wing size are determined by two genes…

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: 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: 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: A geneticist discovers a new mutation in Drosophila melanogaster that causes the flies to shake and…

A: Linkage refers to the occurrence of different genes or DNA (deoxyribonucleic acid) sequences closely…

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 Drosophila strain with two mutated phenotypes was crossed with a wild-type Drosophila strain. The…

A: Law of independent assortment state that two different allele assorts independent from one other.…

Q: In Drosophila, a female fly is heterozygous for three mutations, Bar eyes (B), miniature wings (m),…

A: In terms of genetics and genomics, linkage describes how closely genes or other DNA sequences are…

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: A recessive mutation pd causes purple eyes in Drosophila, in contrast to the wildtype red eyes. A…

A: The objective of this question is to determine the proportion of offspring that will have purple…

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: 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: 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: what is the approximate map distance between the two genes?

A: Linkage is a phenomenon which determines how genes are placed in close proximity to each other.   It…

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, 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: 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: Are the genes linked, unlinked, or incompletely linked? In Drosophila, white eyes (w) and vestigial…

A: In Drosophila, white eyes (w) and vestigial wings (vg) are recessive traits to the red eyes and wild…

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: If a Drosophila female that is homozygous for an X-linked recessive mutation is bred with a male…

A: All the male offspring who will get their X chromosome from their mother will show mutant phenotype.…

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.