The recessive allele s causes Drosophila to have small wings, and the s+ allele causes normal wings. This gene is known to be X linked. If a small-winged male is crossed with a homozygous wild-type female, what ratio of normal to small-winged flies can be expected in each sex in the F1? If F1 flies are intercrossed, what F2 progeny ratios are expected? What progeny ratios are predicted if F1 females are backcrossed with their father?

Q: In the fruit fly, vestigial wings and hairy body are produced by two recessive genes located on…

A: note: since you have posted multiple questions we have answered the first questions for you. if you…

Q: Hemophilia is a X-linked/sex linked recessive trait in humans. The dominant allele (H) causes normal…

A: Himophilia is the disorder related to blood clotting. it is sex linked recessive disorder. So only…

Q: Assuming no crossover takes place, how many copies of the short-hair allele (h) will be present in…

A: Dominant allele Dominant allele is the factor (term use by Mendel, now it is known as gene) which…

Q: In Drosophila flies, the allele b gives a black body, and the allele b+ gives brown, the wild-type…

A: In drosophila , There are three genes :- Black body b , waxy wings wx and cinnabar eyes cn .While ,…

Q: In mice, black color (B) is dominant to white (b). On different homologous chromosomes, a dominant…

A: First up of all, I would like to clarify that in order to calculate the probability of genotype and…

Q: In Drosophila, the genes for body coloration and eye size are on different chromosomes.…

A: A gene is the basic structural and functional unit of life and is composed of DNA(deoxyribonucleic…

Q: You have a Drosophila line that is homozygous for autosomal recessive alleles a, b, and c, linked…

A: The Recombinant Frequency tells us about the percentage of or the proportion of recombinants present…

Q: n Drosophila, vermilion eye color is due to a recessive allele (v) located on the X chromosome.…

A: assuming that  : The wild type = allele+ / allele+ Heterozygote = allele+ / allele Mutants = allele…

Q: Let’s suppose that a gene affecting pigmentation is found on the Xchromosome (in mammals or insects)…

A: Introduction  The total chromosomes in the body are divided into two groups: Autosomes…

Q: A kidney-bean shaped eye is produced by a recessive gene, k, on the third chromosome of Drosophila.…

A: "Genetic variation" is the result of the recombination of genetic material during the inheritance…

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: a Punnett square for a cross between a homozygous red-eyed female (XR XR ) and a white-eyed male (Xr…

A: In Drosophila, white eye colour is recessive X-linked trait while red eye colour is dominant.…

Q: n the fruit fly Drosophila melanogaster, wild type body colour is black and is a dominant trait,…

A: The term "genotype" broadly refers to an organism's genetic make-up. Monohybrid cross is defined as…

Q: Erminette fowls have mostly light coloured feathers with an occasional black one, giving a flecked…

A: Answer: 1:2:1 Incomplete dominance.

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: In cats, S = short hair; s = long hair; XC = black coat; Xc = yellow coat; XCXc = tortoiseshell…

A: Inheritance is the process of transmitting the traits from parent to offspring. Traits of an…

Q: The long hair of Persian cats is recessive to the short hair of Siamese cats, but the black coat…

A: A dihybrid cross in one in which organisms that differ in two different characters are mated to…

Q: In pea plants, the "L" allele, which indicates smooth seeds, is dominant over the "l" allele, which…

A: Independent assortment is  random distribution of alleles to the gametes that occurs when genes are…

Q: A cross between two pure breeding pea plants in which one parent produced yellow seeds and the other…

A: Punnet square is the diagrammatical square that helps to determine all resultant combinations of…

Q: eye color is determined by a recessive allele, v, of an X-linked gene. The wildtype color is…

A: Eye color in Drosophila is an example of a X-linked trait: In Drosophila, the gene for eye color is…

Q: Fruit flies with one allele for curly wings (Cy) and one allele for normal wings (Cy+) have curly…

A: If a Fruit fly has one allele for curly wings (Cy) and one allele for normal wings (Cy+), then its…

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, the allele for brown eyes (b) is recessive, while the red eye allele (B) is dominant.…

A: Dominant traits Red eye - B Normal body - E Recessive traits brown eye - b ebony body - e The…

Q: In fruit flies, normal wings (G) are dominant to glossy wings (g) and red eyes (R) are dominant to…

A: Phenotypic expression seen in organisms are shown by genes. Most genes have two alleles and the…

Q: In fruit flies, red eyes (R) are dominant over purple (r). Two red- eyed parents are crossed,…

A: An allele is a variant form of a given gene.  Phenotype is the observed physical traits of an…

Q: In fruit flies, eye shape is an X-linked trait. Round eyes (XG) are dominant to almond-shaped eyes…

A:

Q: A child with Type O blood is born to a mother with Type A blood.   What is the genotype of the…

A: The genotype is a combination of a gene and the phenotype is the observable characteristic. The…

Q: Most of the individuals of a certain wildflower population have white flowers, although a few are…

A: Genetics is a study of genes, heredity, and genetic variation in an organism. Living organisms…

Q: In flies, assume black (B) is dominant and green (b) is recessive for abdomen color, and straight…

A: A genetic map displays the map distance (in cM) between any two loci as well as the position of…

Q: In Drosophila, gray body color is dominant to ebony body color, while long wings are dominant to…

A: Genotype is defined as the complete set of genes present in the individual and the information of…

Q: In an insect species, the genes for white eyes (w) and smooth legs (s) are linked and are located 16…

A: In genetics, genes forms the hereditary units of life. The genes contains two alternative forms…

Q: In four o’clock(a type of flowering plant), red color flowers exhibit incomplete dominance over…

A: When a dominant allele cannot completely mask the effects of a recessive allele, and the resultant…

Q: olydactylism (extra digits) is due to a dominant autosomal allele, what is the likelihood that a…

A: Polydactyly is an autosomal dominant condition. Incomplete dominance is the type of inheritance in…

Q: A) Calculate the map distance separating the three genes B) Which gene is in the middle?

A: Symbol  white eyes = r short wings = l  ebony bodies = g    red eyes = R long wings = L  Gray bodies…

Q: In fruit flies (Drosophila melanogaster), the bn+ allele for normal dull red eyes is dominant to the…

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

Q: In snails, the maternal gene influences the phenotype of the direction of snail coiling. If D is an…

A: dd female cross with dd male..

Q: A wild-type male and a wild-type female Drosophila with red eyes and full wings are crossed. Their…

A: Genetics, the study of heredity generally and of genes particularly. genetics forms one in every one…

Q: In the fruit fly, Drosophila melanogaster, a spineless (no wing bristles) female fly is mated to a…

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

Q: In Drosophila, ebony body colour is produced by a recessive gene a and wild-type (gray) body colour…

A: Answer: DIHYBRID CROSS : It is the cross made between two traits of an individual.

Q: In fruit flies, L = long wings and l = short wings. When a long-winged fly is crossed with a…

A: A Punnett square is defined as a graphical representation of all the possible offspring genotypes…

Q: In Drosophila, sepia colored eyes are due to a recessive allele s and red eyes are due to a dominant…

A: The study of heredity and variation is called genetics. The basic principles of genetics were…

Q: In the fruit fly Drosophila, a rudimentary wing called vestigial and the dark body color called…

A: This species is used because of its small size,short generation time and ability of females to lay a…

Q: Bicoid is a maternal-effect gene in the fruit fly Drosophila. Recessive mutations in bicoid can…

A: A substance that specifies different fate to the cells due to the difference in their concentration…

Q: In Drosophila flies, the allele b gives a black body, and the allele b+ gives brown, the wild-type…

A: Genes are the hereditary units of life. The genes can be linked or may not be linked.  When two…

Q: In wolves, black eyes (B) are dominant to brown eyes (b) and short fur (S) is dominant to long fur…

A: The different forms of gene that specify a single character are referred to as alleles. The dominant…

Q: A kidney-bean shaped eye is produced by a recessive gene, k, on the third chromosome of Drosophila.…

A: If the genes are located on the same chromosome then they are considered as linked genes and they…

Q: n Drosophila, singed bristles (sn) and cut wings (ct) are both caused by recessive, X-linked…

A: Mapping deals with sequence, in which genes appear on a chromosome and their distance apart. Mapping…

Q: In Drosophila melanogaster, a yellow-bodied (dark coloured) male with vestigial (underformed) wings…

A: Drosophila malenogaster is a fruit fly from family drosophilidae.

Q: The genes for the recessive traits of mahogany eyes and ebony body are approximately 30 map units…

A: Given-  Recessive traits of mahogany eyes and ebony body are 30 map units apart. Both traits are…

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.