In Drosophila, a cross was made between a yellowbodied male with vestigial (not fully developed)wings and a wild-type female (brown body). The F1generation consisted of wild-type males and wild-typefemales. F1 males and females were crossed, and theF2 progeny consisted of 16 yellow-bodied males withvestigial wings, 48 yellow-bodied males with normalwings, 15 males with brown bodies and vestigialwings, 49 wild-type males, 31 brown-bodied femaleswith vestigial wings, and 97 wild-type females.Explain the inheritance of the two genes in questionbased on these results.

Q: In Drosophila melanogaster, white eyes (w) is an X-linked recessive mutation. Normal eyes are red…

A: The normal eyes are red in Drosophila melanogaster. Normal red eyes are represented by W. Whereas,…

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

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

Q: The following X-linked recessive traits are found in fruit flies:vermilion eyes are recessive to red…

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

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

A: Genes can be defined as an important unit of inheritance. A pair of genes is called allele. These…

Q: Female fruit flies from a true-breeding strain with yellow body and cut wings are mated to male…

A: The physical separation between the positions of two genes on a chromosome is referred to as the…

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: Drosophila may be monosomic for chromosome 4, yet remain fertile.Contrast the F1 and F2 results of…

A: Chromosomes are thread-like structures found in the nucleus of plant and animals. DNA is packed into…

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

A: To determine the recombination frequency and genetic map distance between the two genes, we need to…

Q: But for part A if you cross dd ll x DD LL, won't all the offspring be DdLl (dark colored and long…

A: Homozygous  The individual who has both same variant of allele of a gene  of a particular…

Q: Three genes yellow (y) white (w) and cut (ct) are under investigation for possible linkage on the X…

A: If the genes are located on the chromosome then they are classified as linked genes. In this…

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

A: Introduction  A dihybrid cross is made up of two individuals who have two features that are…

Q: Deduce the phenotypic proportions in the progeny of thefollowing crosses of autotetraploids in which…

A: Phenotypic proportion shows the ratio of offspring's combination genes and these are similar in the…

Q: A parental cross between homozygous wild-type red eyed females (X+ X+) were crossed with white eyed…

A: Chi-square (X2) analysis helps us to compare the observed data of an experiment to the expected…

Q: A pea plant that is dwarf with green, wrinkled seeds was crossedto a true-breeding plant that is…

A: A trihybrid cross is a cross in which three characters of a plant is observed in a species.…

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: 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: 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: 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: Forked bristles, miniature wings, and sable bodies are all homozygous recessive traits whose genes…

A: In genetics when two to three genes are present I the same chromosomes, it is termed as linked…

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: None

A: Genotype and Phenotype of Parents:Male (osk-/osk-): This male has two mutant alleles of the oskar…

Q: Drosophila, white eyes (w) are recessive to red eyes (w+) at one locus and black body (b) is…

A: Linked genes are present on a single chromosome.  In complete linkage ,genes are present close to…

Q: The phenotype of crooked wings (cw) in Drosophila melanogaster is caused by a recessive mutant gene…

A: The expected phenotypes as per the dihybrid phenotype ratio and their proportionate numbers out of a…

Q: In Drosophila, red eyes is wild-type and cinnabar eyes are mutant. Wings with crossveins are wild-…

A: In Drosophila, color of eyes are represented as red and  cinnabar in which red eyes is wild and…

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: In corn, the genes that determine seed color and coat are both located on chromosome 9.  Seed color…

A: This analysis of a corn dihybrid cross revealed that seed color and coat texture are controlled by…

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

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.