In a testcross of a corn plant heterozygous for 3 linked, recessive genes (a, b, & d), the following phenotypes & numbers of progeny were obtained (total progeny is 1000).  Choose the map that best fits the data. A) A --2.7-- D --4.2-- B B) A --2.4-- D --2-- B C) A --4.2-- B --2.7-- D D) A --4.2-- D --2.7--B E) A --2-- B --2.4-- D F) A --2.7-- B --4.2-- D

Q: In a testcross for two genes, what types of gametes are produced with (a) complete linkage, (b)…

A: Testcross is a breeding of an individual with homozygous recessive individual. The aim is to…

Q: A heterozygous plant of AaBb genotype was testcrossed and gave the following results.   Phenotypes…

A: A trait is a characteristic feature that is unique to particular individual . A dihybrid cross is a…

Q: In the fruit fly, recessive mutations in either of two independently assorting genes, brown and…

A: In Drosophila, as well as in many other plants and animals, pigmentation is highly variable both…

Q: Perform two consecutive crosses similar to those of Mendel for the following individual plants.…

A: Plants with round seeds (RR) and plants with wrinkled seeds (WR) are crossed (rr). Both parents are…

Q: The alleles his-5 and lys-1, found in yeast, result in cells that require histidine and lysine for…

A: "Genetics" is the study of the functioning and main codes of variation and heredity. Inheritance is…

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

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

Q: In barley, a self-fertilizing species that can be cross-fertilized, two true-breeding strains with…

A: Barley is an important crop, with having a broad physiological and morphological varieties along…

Q: In a cross of a h-r+ X h+r-, the following progeny were produced: 25 h-r+ 23 h+r- 7 h+r+ 5 h-r-…

A: The genetic distance between two genes is calculated by : (recombinant progenies/ Total number of…

Q: A cross between fruit files with genotypes Aa Bb × aa bb produces the following progeny: 10 Aa Bb…

A: Linkage is a phenomenon in which how genes are placed in close proximity to each other but in the…

Q: In Drosophila, the genes A, B, and C are linked and in the order given. The distances are A-B = 5…

A: Linked genes are genes that are located on the same chromosome. Unless they are separated by…

Q: If 3 completely dominant gene pairs A a, B b, C c are assorting independently, how many progeny…

A: a. Progeny genotypes means the trait in daughter cell should contain all the alleles which are…

Q: ley, a self-fertilizing species that can be crossed fertilized, two true-breeding strains with…

A:

Q: On crossing a plant with red fruit and hairy stem, with one that was yellow fruit and hairy stem,…

A: We can conclude following through the progeny number mentioned in question- 1. After crossing a…

Q: Three autosomal recessive mutations in yeast, all producing the same phenotype (m1, m2, and m3), are…

A: An autosomal recessive mutation means two copies of an abnormal and defective gene must be present…

Q: In a trihybrid cross of a tall, purple-flowered pea plant with round seeds (TtPpRr) with a short,…

A: This is a trihybrid cross because three genes are involved in this case.

Q: In barley, a self-fertilizing species that can be cross-fertilized, two true-breeding strains with…

A: Cytoplasmic inheritance:Inheritance of genes those present in the organelles of the cytoplasm to the…

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

A: Autotetraploid is a genetic condition that is characterized by the presence of four times the…

Q: In corn, the allele f ′ causes floury endosperm and the allele f ″ causes flinty endosperm. In the…

A: First, examine the crosses and also the ensuing genotypes of theendosperm:

Q: The following is a linkage map of chromosome 5 for three genes in tomato: (see image) The cross…

A: The distance between the genes that are located on the same chromosome are used to calculate the…

Q: Two true-breeding varieties of maize, one 11 cm high and the other 47 cm high were crossed and the…

A: Matings within pure-breeding (or true-breeding) lines produce offspring carrying specific parental…

Q: three recessive genes a, b, and c in the model plant Arabidopsis are found to be linked on…

A:

Q: In a cross between two varieties of corn, gl1gl1Ws3Ws3 (egg parent) * Gl1Gl1ws3ws3 (pollen parent),…

A: Fertilization is the process of fusion of male and female gametes that results in the formation of a…

Q: A geneticist crosses two yellow mice with straight hair and obtains the following progeny: 1/2…

A: A dihybrid cross is a pairing procedure in which two different, genetically determined…

Q: Is it possible to cross two different pure-breeding yellow zucchini strains and obtain all green…

A: Genetics is a branch of the biology involved in the study of genes, genetic variation, and heredity…

Q: In an intra-species cross performed in mustard plants of two different species (Brassica juncea and…

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

Q: Consider the genetic map below. (a) In a total of 1000 observed progeny, how many would be expected…

A: Given: total of 1000 observed progeny. Genetic map: A-----10cM----B--2.5cM--C Percent recombination…

Q: What is the genotype of the F1 generation of the corn monohybrid cross described above? What is the…

A: When we cross pure purple kernel (RR) with pure yellow kernels (rr),    Parents genotypes      RR…

Q: a. How many generations are presented in this pedigree? b. What are the most probable genotype of…

A: Pedigree It is a diagrammatical representation of the inheritance of a trait over several…

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

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

Q: What would be the size and genotype of the F1 from a  cross between a true-breeding 11 cm plant and…

A: Mendel's Law of dominance states that out of a pair of contrasting characters present together, only…

Q: Many of the color varieties of summer squash are determined by two different interacting genes A and…

A: Epigenetics is non allelic interaction between alleles present at different gene locus.

Q: Three fruit shapes are recognized in the summer squash (Cucurbita pepo): disk-shaped, elongated, and…

A: Genes are the hereditary units of life. The inheritance pattern was introduced by Gregor Mendel,…

Q: The alleles his-5 and lys-1, found in yeast, result in cells that require histidine and lysine for…

A: Genes are found on different chromosomes, occasionally far apart, but on the same chromosome, they…

Q: Individuals of genotype AaBb were mated to individuals of genotype aabb. One thousand offspring were…

A: Individuals of genotype AaBb were mated to individuals of genotype aabb. One thousand offspring were…

Q: In barley, a self-fertilizing species that can be crossed fertilized, two true-breeding strains with…

A: Option(B) is correct answer. Reciprocal cross is done where different parental types are used both…

Q: . A corn geneticist has three pure lines of genotypes a/a ; B/B ; C/C, A/A ; b/b ; C/C, and A/A ;…

A: Genetics is a part of science that deals with the investigation of genes, genetic variation, and…

Q: In a three-point testcross, the nonrecombinant progeny are A+ B+ C+ and a b c. The double- crossover…

A: "Genes" are the fundamental unit of heredity. They store genetic information in the form of DNA,…

Q: In the plant Arabidopsis, the loci for pod length (L, long;l, short) and fruit hairs (H, hairy; h,…

A: Crossing over is an interaction between homologous chromosomes that results in a lot of genetic…

Q: In a particular organism, the A locus and the D locus are so tightly linked that no crossing over is…

A: Answer: CROSSING OVER = It is the process of recombination between two strands of DNA , when their…

Q: Consider the genetic map below. (a) In a total of 1000 observed progeny, how many would be expected…

A: Given that, there are 1000 observed progenies. Also given that, the distance between A and B gene is…

Q: An individual heterozygous for four genes, A/a • B/b •C/c • D/d, is testcrossed with a/a • b/b • c/c…

A: A cross is the mating of two people that results in the fusing of gametes and the creation of…

Q: A cross between fruit files with genotypes Aa Bb × aa bb produces the following progeny: 10 Aa Bb…

A: In a cross, the arrangement of linked alleles on the chromosomes is critical for determining the…

Q: In the case of carnation flower, what do you think a flower carnation would look like if the red and…

A: Incomplete dominance: In this type of inheritance, a third phenotype is produced and this will be a…

Q: In roses, two pathways combine to produce orange colored flowers in wild type. Two heterozygous…

A: The genes control the hereditary characters of an organism. The genes may be transferred via…

Q: Imagine you are performing a cross involving seed shape in garden pea plants. What F1 offsprings…

A:

Q: barley, a self-fertilizing species that can be cross-fertilized, two true-breeding strains with…

A: Reciprocal cross is done where different parental types are used both as a maternal form and as a…

Q: Explain the following

A: Gametogenesis is the method leading to the formation of the female and male germs cells. The…

Q: As a graduate student, you join a lab and you are looking through some old notebooks. You find a…

A: Map distance is defined as the distance between two genes loci present on a chromosome. It is…

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

A: Autotetraploid are organisms that contain four sets of chromosomes that are derived from the same…

Q: A three-point cross was conducted, 8500 progeny were evaluated, and the genetic map was determined…

A: The genes that are located on the same chromosome will shows reduce amount of crossing over. In case…

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.