Female Drosophila with cinnabar eye (cn) and vestigal wings (vg) were mated to males with roof wings (fr). The F1 were all wild type. When the F1 females were tested and crossed with male homozygous for all thrre traits, the following result were obtained.   For this problem, rf, cn, vg is for roof wing / cinnabar eye / vestugal wing   rf + cn + vg all wild type (no definite phenotype described).   What is the value of coincidence and interference?

Q: For the mating AaBBDdGg x AabbDdGG, draw the monhybrid punnet squares, one for each of the four…

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

Q: Two genes in tomatoes are 61 mu apart; normal fruit (F) is dominantto fasciated (flattened) fruit (…

A: Map distance is calculated by dividing the number of recombinant offspring with the total number of…

Q: In fruit flies, you are mapping three genes in a three point cross. The mutants are hairy body (h),…

A: To determine gene order, we will compare parental and double crossover progenies.

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: Phenotypically wild-type F1 female Drosophila, whose mothers had light eyes (lt) and fathers had…

A: The distance between two points on a chromosome can be calculated by counting the number of…

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

A: Alleles are the alternative forms of a gene. Allele can be dominant or recessive.

Q: The parental genotypes for a series of crosses are wild-type male fruit flies mated to females with…

A: Drosophila melanogaster is a small, common fly found near ripe and rotten fruit. It has been used…

Q: A 3-inch plant was crossed with a 15-inch plant, and all F1 plants were 9 inches. The F2 plants…

A: The normal distribution of alleles is observed through the bell-shaped curve. The normal…

Q: In the garden pea, orange pods (o) are recessive to green pods (+), and sensitivity to pea mosaic…

A: To determine the gamete frequencies of the recombinants and non-recombinants, we need to first…

Q: h se g. +se+ + se g. ++g. h se + + + + h+g. h++ TOTAL Oh; 16.4 O se; 7.1 is the gene in the middle…

A: Genetic linkage is the tendency for genes located close to each other on the same chromosome to be…

Q: In Drosophila fruit flies, the genes for warped wings (dwp), rumpled bristles (rmp), and pallid…

A: Three point test cross data is given in the question. The three genes are involved in this cross.

Q: The A & B antigens in humans may be found in water-soluble forms in secretions, including saliva of…

A: Antigens are generated in the human body by the allelic activity of the A, B, and O group loci in…

Q: Drosophila females heterozygous for three recessive mutations, a, b, and c , were crossed to males…

A: Drosophila females heterozygous for three recessive mutations, a, b, and c, were crossed to males…

Q: In Drosophila, a cross was made between a yellowbodied male with vestigial (not fully…

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

Q: In Drosophila, the gene loci for curved wings and purple eyes are 20 centimorgans (map units) apart…

A: When two genes present on the same chromosome, they are called as the linked gene and their…

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: In Drosophila, red eyes is the wild-type phenotype. There are several different genes that affect…

A: Genes are the small fragments of DNA which are unit of inheritance.  These genes acquired by the…

Q: Cross #1: P: F1 Fs Homozygous scarlet-eyed males Homozygous brown-eyed females X 1072 Wild-type…

A:

Q: In a cross involving independently assorting loci, the cross BBYY x bbyy (assume "B" and "Y" are…

A: The law of independent assortment was proposed by Gregor Mendel, where he states that two alleles…

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: In crosses between mutant mice, you find the following patterns in the genotype for the A locus…

A: Given:Genotype data for the A locus containing alleles A1, A2, A3, and A4 in mutant mice.The…

Q: The genes responsible for albinism (A or a) and pink eyes (P or p) in mice are linked and wild-type…

A: The genes forms the hereditary units of the life. At the same time it consists of two alternative…

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

A: Genotypes: The genotypes of the given phenotypes are: • wing bristles = s+ , s (no bristles) • eye…

Q: In onion, male sterility is produced when the nuclear genotype is aa and the mitochondrial gene S…

A: The objective of the question is to determine the genotypic and phenotypic ratios of the offspring…

Q: In garden pea plants, tall stem height (T) is dominant over short stem height (t), and round seed…

A: Garden pea possess two traits :- Height and shape  Height can be tall or short .Tall ( T ) is…

Q: Wild-type mice have brown fur and short tails. Loss of function of a particular gene produces white…

A: The recombination frequency is calculated as the number of recombinant progeny divided by the total…

Q: Antennaless (al), brown eyes (bw), and ebony body (e) are recessive autosomal mutants of Drosophila…

A: Due to the ratio's incompatibility with the triple point test cross ratio (i.e. P:P:S1:S1:S2:S2:D:D)…

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

A: Fruit flies (Drosophila melanogaster) are small insects which are usually found in homes, hotels as…

Q: A is dominant over a and B is dominant over b. Genes A/a and B/b assort independently. The parental…

A: AAbb X aaBB  F1:-    Ab Ab aB AaBb AaBb aB AaBb AaBb

Q: The image shows a pair of homologous chromosomes from a single parent before gamete production. M1…

A: Genetic linkage is a study which shows us the  genes or alleles which are close to each other on 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.