In the garden pea, several different genes affect pod characteristics.A gene affecting pod color (green is dominant to yellow) is approximately7 mu away from a gene affecting pod width (wide is dominantto narrow). Both genes are located on chromosome 5. A thirdgene, located on chromosome 4, affects pod length (long is dominantto short). A true-breeding wild-type plant (green, wide, longpods) was crossed to a plant with yellow, narrow, short pods. TheF1 offspring were then testcrossed to plants with yellow, narrow,short pods. If the testcross produced 800 offspring, what are theexpected numbers of the eight possible phenotypic combinations?

Q: In Drosophila, the sepia mutation (se, chromosome 3, position 26) results in dark brown eyes, while…

A: Introduction :- D. melanogaster is an ideal model organism due to a variety of characteristics. The…

Q: Convert the expected phenotypic ratio from Part A into the expected probability for each of the four…

A: Dominant traits Round fruit (R) Red fruit (F) Recessive traits oval fruit (r) Yellow fruit (f)…

Q: n a certain plant, the dominant form of gene P codes for purple flowers while the recessive form…

A: Gregor Mendel discovered the fundamental doctrines of inheritance through his study of pea plants.…

Q: Inversions are known to affect crossing-over. The following homologs have the indicated order (the…

A: Insertion, deletion, substitution, and inversion are the four types of mutations. Insertion is a…

Q: In fruit flies, the autosomal recessive mutation pr causes brown eyes whereas the cn mutation causes…

A: A genetic characteristic or disease can be handed down from one parent to the next through autosomal…

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: 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: n pea plants, tall (T) is dominant to dwarf (t) and yellow (Y) is dominant to green (y).  In a cross…

A: Note: We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

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: In fruit flies, red eyes (pr+_) are dominant to purple eyes (prpr) and normal wings (vg+_) are…

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

Q: In the model plant Arabidopsis thaliana, the following alleles were used in a cross: T = presence of…

A: a) To find: The appearance of the F1

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: Given that, allele R is dominant over allele r where R represents the allele for round shape and r…

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: Red body in flies are dominant to yellow body, and long wings are dominant to short wings. A test…

A: This means the parent fly with red, short-wings is heterozygous for the body color and also the…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: Dihybrid cross: A dihybrid cross occurs between two organisms that are identical hybrids for a given…

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: Two recessive traits in mice—droopy ears and flaky tail—arecaused by genes that are located 6 mu…

A: The genes for the recessive traits – droopy eyes (de) and flaky tail (ft) are located 6 map units…

Q: autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is very…

A: Hi! Since you posted many questions, we will be answering the first for you. Please post the other…

Q: In Drosophila the genes forked bristles (f and f+) and vermilion eyes (v and v+) are ~24 m.u.  apart…

A: During meiosis, genes between homologous chromosomes are transferred in genetic recombination, which…

Q: In corn, the genes v (virescent seedlings), pr (red aleurone), and bm (brown midrib) are all on…

A: The diagrammatic graphical representation of relative distance between linked genes of a chromosome…

Q: In an autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is…

A: G gene coded for green  stigma  g gene coded for red stigma   GG = homozygous dominant = green  Gg…

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: 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: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: According to the concept of genetic linkage, when genes are far apart or on the different…

Q: A recessive allele causes Drosophila to have white eyes instead of wild-type eyes. This eye colour…

A: Inheritance is the process by which the properties/characteristics of one generation is passed on to…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: The test cross is another fundamental tool devised by Mendel . In its simplest form, a test cross is…

Q: You design Drosophila crosses to provide recombinationdata for gene a, which is located on the…

A: The drosophila is commonly called fruit fly, and it is commonly used for the study of genetics. The…

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: Waxy endosperm (wx), virescent seedling (v), and shrunken endosperm (sh) are all recessive mutants…

A: Introduction: Endosperm is a tissue present inside the seeds of most of the angiosperms which…

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: 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 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: A cross was made between a Red and Long flowered (RRLL) plant and a blue and dwarf flowered (rrll)…

A: Answer: The cross between RRLL (red and long flower) plant and rrll (blue and dwarf plant) could…

Q: In Drosophila, the dominant Bar mutation (B, chromosome X, position 57) results in thin bar- shaped…

A: Bar mutation allele = XB (dominant) Wild allele for bar= Xb (recessive) Signed allele = Xsn…

Q: Tomato Plants In tomato plants, round fruit (R) is dominant to oval fruit (r). Pure breeding plants…

A: A test cross is a way to explore the genotpye of an organism. When a dominant phenotype i.e…

Q: In the mapping example in Fig 2, the dominant alleles were on one chromosome and the recessive…

A: Genetics is the study of inheritance and heredity. Alleles are the different forms of a gene. Allele…

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

A: The initial step is to decide the request for the three genes.This should be possible by assessing…

Q: The A locus and the D locus are so tightly linked that norecombination is ever observed between…

A: Introduction  Genes can be linked or autonomous. When they segregate during the time of formation,…

Q: In an autotetraploid Chinese primrose (Primula sinensis L.), the gene controlling stigma color is…

A: Polyploidy is a condition in which there would be the presence of more than two sets of chromosomes…

Q: In cucumbers, heart-shaped leaves (hl) are recessive to normal leaves (Hl) and having numerous fruit…

A: “Dominant and recessive” traits are the two different forms of the gene. The trait which is…

Q: In the fruit fly, dumpy wings (d) and purple eyes (p) are encoded by mutant alleles that are…

A: The two genes are involved in this case. The wings and eye encoding genes are involved here. The…

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.