In corn the genes for tassel length (alleles T and t) and rust resistance (alleles R and r) are known to be on separate chromosomes. In the course of a routine mating check experiment, a breeder got the following results upon crossing T/t:R/r with a double recessive strain (t/t;r/r): genotype Number of progeny T/t; R/r 98 t/t; r/r 104 T/t; r/r 3 t/t; R/r 5 In addition to these data she noted that the cobs contain only about 50% of the expected kernels. Note that in corn, each kernel is the result of one mating or can be considered one progeny. Hence 50% of the matings are not producing viable offspring. Based on the location of these genes on separate chromosomes what is the expected result? Suggest a hypothesis of a genetic process that could be used to explain the potential karyotype of one of these parents. What are the actual genotypes of the parents?

Q: A wild-type fruit fly (heterozygous for gray body color and wings) mated with a black fruit fly with…

A: Need to find the recombination frequency between the two genes.

Q: Gene A converts compound A (white) to compound B (blue). Gene B converts compound B to compound C…

A: Compound A→→→→→→→→ (white)                            Gene A Compound B→→→→→→→→ (Blue)…

Q: Calculate the probability of either all-dominant or all-recessive genotypes for the alleles A, B, E,…

A: For each gene pair, the probability of getting a homozygous dominant genotype (e.g., AABB) is 1/4…

Q: The table below shows the progeny of a test cross of a heterozygote (HhFfGg). Each row shows the…

A: Alleles Type Count H G F Parental 124 h g f Parental 119 H g F Double cross over 15 h G f…

Q: The table below shows the progeny of a test cross of a heterozygote (JjBbRr).  Each row shows the…

A: Q.Ans:- Explanation:- Recombination Frequency:- Recombination frequency is defined as how many…

Q: The result of a test cross of a yeast cell that is heterozygous for three genes are summarized in…

A:

Q: In a diploid plant species, an F1 with the genotype Mm Rr Ss is test crossed to a pure breeding…

A: The shuffling of genes (alleles) between chromosomes is referred to as recombination. This allows…

Q: A fruit fly that is heterozygous for the autosomal recessive mutations black (b) body, purple (pu)…

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

Q: Assume that the count of F2 phenotypes you got is as follows: Phenotype F2 count b P t 90 b P T 5 b…

A: Genetic mapping is used to identify the linear order of genes along with the relative distance…

Q: The coats of Labrador retrievers are black, chocolate, or yellow in colour. Two genes control coat…

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

Q: You have recently done a three point cross and made a genetic map. Using the data shown below, you…

A: Total number of individuals = 465

Q: A genetic disorder is caused by a LOF mutation (Bm) and epigenetic imprinting of gene B. Through…

A: Epigenetic imprinting or genomic imprinting is a process where there is the exclusive expression of…

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

A: Recombination : When a new trait is formed due to the genetic exchange. Recombination frequency is…

Q: In a study of several characters, it was found that when di-hybrid crosses were made, several genes…

A: A genetic map is a chromosome map that depicts the relative positions of genes and other significant…

Q: The table below shows the progeny of a test cross of a heterozygote (MmRrDd). Each row shows the…

A: Test Cross: A test cross is a breeding experiment that is used to determine the genotype of an…

Q: You are working for a parakeet breeder that has some green birds and some blue birds. You want to…

A: Green is the dominant phenotype.We can determine this because the blue male, who must be homozygous…

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

A: The recombination frequency is measured for the calculation of the distance between the two genes…

Q: Phenotype wild Black body Black body wild wild Black body Black body wild Brown Brown Brown…

A: Three point cross is one of the efficient way of mapping 3 genes at once  which allows the order of…

Q: Consider a situation where F1 is backcrossed with one of its parental lineage and we obtained…

A: Introduction An allele is an alternative form of a given gene, meaning it is one of two or more…

Q: Two linked loci have a recombination frequency of 5%. A series of crosses is performed. The P…

A: Given information The recombination frequency is 5%. The P generation involves an individual that…

Q: A 3-point test cross produces the following numbers of offspring: What gene is in between the other…

A: Genes are DNA sequences of nucleotides that code for RNA, and RNA codes for a protein. In the case…

Q: You cross two plants and get the following results: Recombinant progeny type A: 43 Recombinant…

A: Crossing over is the exchange of genetic material between non sister chromatid of chromosome causes…

Q: What is the genetic distance between red petals and waxy texture?

A: Gene distance  Gene distance means the number of bases present between two gene. On the basis of…

Q: recessive phenotype. There were 36 offspring produced. Two of those offspring were crossed with each…

A: To obtain this kind of cross 3 alleles will be taken. Parent 1- TTPPQQ gametes from parent 1- TPQ,…

Q: Below is the linkage map for genes y, sh and c that are in cis arrangement. Interference is 0.4 and…

A: The cis arrangements of genes on a chromosome mean that all the dominant genes are on one chromosome…

Q: 1. Which is older: the arrowhead or the spear point? 2. If G is a well, who do you think dug it? 3.…

A:

Q: You are working with a dog breeder to produce a litter of puppies from their dogs. Of particular…

A: Gregor Mendel was an Austrian scientist, mathematician, and biologist who proposed laws of…

Q: Continuing his experiments, in Miles Morales' genome, the Goblin found similar genes, including one…

A: In the given case, let the allele associated with invisibility be “I” and allele associated with…

Q: AABB and aabb individuals are crossed to produce a AaBb F1. The F1 was back crossed to a aabb.…

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

Q: (Practice Hint: Click or tap your finger on the text box, then use the keyboard to enter your…

A: In the world of gardening, understanding the principles of genetics can help gardeners make informed…

Q: Two true-breeding Triffid strains (poison stingers and no stingers) are crossed. AlL F1 progeny have…

A: Pure breeding means when pure dominant and pure recessive parents mate. No heterozygous condition…

Q: We have crossed true-breeding flies today. Wild type to mutant. Their phenotypes were wt and vg se.…

A: In a genetic experiment involving true-breeding flies, we have crossed individuals with wild-type…

Q: C) the long-haired animal was not pure-breeding. D) the long-haired animal was pure-breeding. 11. In…

A: The Punnett square is a table that lists all of the possible results of a genetic cross between two…

Q: Kernel color in wheat is controlled by 2 pairs of genes (AABB). Determine the color of each…

A: The inheritance of kernel color in wheat is controlled by two genes. These are A and B genes.

Q: 1-C-yonce is type B. What must her genotype be? 2-What must Kay-Z’s genotype be? 3-Which parent…

A: Blood types are determined by the presence or absence of certain proteins called antigens on the…

Q: genes interest with the dominant alleles being T-tall, H=hairy leaves and P=purple flowers. The…

A: In a trihybrid cross three characters are involve. In the above trihybrid cross the three characters…

Q: In one of his experiments, Mendel crossed homozygous yellow plants with homozygous green plants. The…

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.