Q: Where are Drosophila melanogaster found?
A: Drosophila belongs to the family Drosophilidae, whose members are commonly called as small fruit…
Q: Maleness and Male Fertility Are the OnlyKnown Y-Linked Traits in Humans Explain?
A: Humans have an XX-XY type of chromosomal determination of sex. Females possess two homomorphic or…
Q: Describe the formation steps of the dorso-ventral axis during development in Drosophila.
A: The mother fly produces oocytes that have already got anterior-posterior and dorsal-ventral axes…
Q: What are the designations of the sex chromosomes in males of bugs, humans, and butterflies?
A: Chromosomal determination of sex It is also known as allosomic determinati9on of sex and is based on…
Q: n Drosophila, one of the genes controlling wing length is located on the X chromosome. A recessive…
A: 1. Male with miniature wing, red eye. Female with Normal wing, red eye. 2. Phenotypes on…
Q: What would be the most likely effect on development of puncturing the posterior end of a Drosophila…
A: Egg polarity are the earliest activated genes, which decide the formation of main body axis, such as…
Q: Why are the linked genes similar to sex-linked genes? Also how are they different?
A: Defination- Linked genes- These are present close together on the same chromosome. Sex-linked…
Q: The Amami spiny rat (Tokudaia osimensis) lacks a Y chromosome, yet scientists at Hokkaido University…
A: Reproduction: Important biological process by which new offspring are reproduced by their parents is…
Q: What changes, if any, would you predict would occur in the pigmentation of Drosophila melanogaster…
A: The relatively simple morphological trait that helps in the mapping of the genetic basis of…
Q: In mice, the Sry gene is located on the Y chromosome very close to one of the pseudoautosomal…
A: The chromosomes are the genetic material present in the nucleus of the cell which is a condensed…
Q: Drosophila melanogaster has which four linkage groups?
A: The tendency of the genes to locate on the same chromosome, to stay together in the hereditary…
Q: What is the most likely method by which a gene produces red eyes in fruit flies?
A: Answer is C. Mutation changes the coding sequence of the genes so that it codes for red protein…
Q: In Drosophila subobscura, the presence of a recessive gene called grandchildless (gs) causes the…
A: The grandchildless is an autosomal recessive condition (gs/gs). The males of the Drosophila…
Q: You cause a mutation in the bicoid gene in a Drosophila embryo. What effect will this have on this…
A: The members of Drosophila are called "fruit flies." Drosophila embryogenesis is the process by which…
Q: What will be the effect on sexual development in newly fertilized Drosophila embryos if the…
A: Sex determination in drosophila melanogaster is done by balancing the male determinants on the…
Q: Why is it that so many of the sex-linked traits we talk about in humans are carried on X chromosomes…
A: Traits can be dominant, recessive, sex linked recessive or sex linked dominant. Dominance is the…
Q: The inheritance in short wings in Drosophila fruit flies is an x-linked trait, recessive. Which…
A: X-linked recessive inheritance is caused when a mutation occurs in the X-chromosome therefore a male…
Q: Crossing-over does not occur between any pair of homologous chromosomes during meiosis in male…
A: During meiosis, crossing over allows recombination of genes between homologous chromosomes. Based on…
Q: The human RGS10 gene is found on Chromosome 10. How many copies of RGS10 does one egg gamete have,…
A: The meiotic cell division is a process that takes place exclusively during the phenomenon of Sexual…
Q: What will be the effect on sexual development in newly fertilized Drosophila embryos if the…
A: In Drosophila, sex determination is achieved by a balance of female determinants on the X chromosome…
Q: Outline the molecular mechanism of sex determination in Drosophila and mammals.
A: Sex determination refers to determining the sex of an individual. The sex of an organism is…
Q: What possible conclusions can be drawn from the observations that in male Drosophila, no crossing…
A: The structural components are also termed synaptonemal complexes. During the zygonema stage of…
Q: sex determenination.
A: In humans males are heterogametic and females are homogametic. heterogametic means production of…
Q: What will be the effect on sexual development in newly fertilized Drosophila embryos if the…
A: Sex determination in Drosophila is achieved by the balance of female determinants on the X…
Q: How do homeobox genes control segmental identity in drosophila embryo?
A: Homeobox genes encode DNA binding proteins that regulate the gene expression and controls…
Q: What will be the effect on sexual development in newly fertilized Drosophila embryos if the…
A: In Drosophila, sex determination is achieved by a balance of female determinants on the X chromosome…
Q: In humans, males are heterogametic and females are homogametic, Explain. Are there any examples…
A: Answer In humans the 23rd pair of chromosomes contains.
Q: Why is it that mutations in bicoid and nanos exhibit genetic maternal effect in Drosophila (a…
A: the bicoid gene is a maternal effect gene in Drosophila which is responsible for the development of…
Q: What is dosage compensation with respect to the sex chromosomes? Briefly explain how this is…
A: The method by which organisms adjust gene expression between individuals of different biological…
Q: Determines Sex in Drosophila?
A: Drosophila melanogaster is a common fruit fly. It is most common subject used in majority of genetic…
Q: In certain salamanders, the sex of a genetic female can be altered, changing her into a functional…
A: Salamander is an amphibious organism belongs to the order Urodela. Mostly they live in river streams…
Q: How is lozenge eye in drosophila an example of pseudoallelism?
A: Pseudoalleles are formed by duplication of a gene which further evolved to develop new functions.…
Q: What is positional information? What are three different ways that cells obtain positional…
A: Development is a continuous change in shape, size, and function, throughout the life of an organism.…
Q: Which Position-effect variegation in Drosophila?
A: Drosophila are known as the fruit flies that are importantly used as a model organism in the genomic…
Q: A black female cat (XBXB) and an orange male cat (X0Y) weremated to each other and produced a male…
A: A calico cat is any breed of cat that has a tri-colored fur. It will mostly consist of a…
Q: Illustrate the chromosomes in the salivary gland of Drosophila melanogaster
A: Drosophila melanogaster have polytene chromosome in their salivary gland.
Q: Name one trait each in humans & in drosophila whose genes are located on sex chromosome.
A: In both humans and Drosophila, the female possesses two homomorphic sex chromosomes i.e., XX and the…
Q: How do we know that Drosophila utilizes a different sexdetermination mechanism than mammals, even…
A: A chromosome is a compact form of DNA molecule present in dividing cells. In metabolically active…
Q: How Drosophila Mutations that Affect the Two Sexes Differently?
A: Drosophila is a vastly studied organism, especially when it comes to genetic studies. XX makes the…
Q: Describe the major difference between sex determination in Drosophila and in humans.
A: Drosophila melanogaster refers to the fruit fly which is widely used in genetic research as it has…
Q: Turner’s syndrome is the most common sex chromosome aneuploid. Which sex chromosome aneuploid is the…
A: Turner's syndrome: A chromosomal disorder in which a female is born with only one X chromosomeTurner…
Q: In Drosophila, the two mutations Stubble bristles (Sb) and curledwings (cu) are linked on chromosome…
A: Introduction: Chromosomes are the vehicles of genetic information. Mendelian genetics and gene…
Q: There is a gene in the fruit fly (Drosophila) called antennepedia. It controls the formation of…
A: Drosophila melanogaster or common fruit fly or vinegar fly is one of the species of fly. They belong…
Q: List the stages of Drosophila development.
A: Drosophila is a fly that belongs class insecta and order diptera of Animal kingdom. It is commonly…
Q: A new recessive mutant allele doesn’t show pseudodominance with any of the deletions that span…
A: Pseudodominance is defined as the sudden appearance of the phenotype of a recessive gene in a…
Q: Explain how polytene chromosomes of Drosophila are produced and how they form a six-armed structure?
A: Polytene chromosomes are large chromosomes that have thousands of DNA strands. They provide a high…
Which sex chromosome (X or Y) carries the gene for eye color in Drosophila? Why?
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- Why does the sex chromosome X carry the gene for eye color in Drosophila?Why is the gene for eye color in drosophila present on the X chromosome ?How do we know that Drosophila utilizes a different sexdetermination mechanism than mammals, even though it has the same sex-chromosome compositions in males and females?
- Why is it that so many of the sex-linked traits we talk about in humans are carried on X chromosomes - but are expressed mostly in males?White eye color is a recessive sex-linked trait in fruit flies. If a whiteeyed Drosophila female is mated with a red-eyed (wild-type) male, what do you predict for the numerous offspring?What are the designations of the sex chromosomes in males of bugs, humans, and butterflies?
- What will be the effect on sexual development in newly fertilized Drosophila embryos if the following genes are deleted? Q. doublesexWhat will be the effect on sexual development in newly fertilized Drosophila embryos if the following genes are deleted? Q. transformer___i___ sex chromosome is present in male Drosophila and ___ii___ sex chromosome is found in female Drosophila. This statement is completed by the information in row ______. Row i ii A. XY XX B. XX XO C. XO XX D. XX XY