Consider three genes on the same chromosome, Gene A, Gene B and Gene C. You perform three factor mapping cross between parentals aaBBCC and AAbbcc, and then cross the F1 triheterozygotes (aABbCc) to a pure breeding homozygous recessive strain (aabbcc). Indicate whether the F2 offspring below resulted from parental or recombinant gametes.

Q: Consider a cross between a true breeding purple flowered pea plant (genotype PP) and a true breeding…

A: Phenotype is the external appearance of an organism.

Q: Draw two replicated, un-condensed, homologous chromosomes that have the genes A and E on them. This…

A: Homologous chromosomes - Homologous chromosomes is the pair of DNA. These chromosomes are present in…

Q: Imagine that the genes for seed color and seed shape are located on the same chromosome. A cross is…

A: The genes for seed color and seed shape assort independently According to the law of independent…

Q: Tall Tt Gametes Tt F₁ generation T Fertilization Tt t Tall tt Short Tt Tall tt tt Short Conclusion…

A: Backcross is a type of cross in which F1 generation is crossed with recessive parent.

Q: Three autosomal genes are linked along the same chromosome.The distance between gene A and B is 7…

A: Genetic mapping is a method which considers the recombination frequency as a measure of distance…

Q: In Drosophila the genes A B D are linked.  You cross a strain that is homozygous for d with a strain…

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Q: A cross in Drosophila melanogaster involved the recessive X-linked genes for white eye (w), yellow…

A: The genotype expressed by most number of offspring is the parental genotype. Here, + y + and w + ct…

Q: In D. melanogaster, reduced bristles (rd), cinnabar eyes (cn), and vestigial wings (vg) are…

A: Introduction: Drosophila melanogaster is a species of fly in the family Drosophilidae. The species…

Q: A female of genotype a b c + + + produces 100 meiotic tetrads. Of these, 68 show no crossover…

A: A four-part structure that forms during the prophase of meiosis and consists of two homologous…

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 corn, male sterility is controlled by maternal cytoplasmic elements. This phenotype renders the…

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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: Three autosomal genes are linked along the same chromosome.The distance between gene A and B is 7…

A: Crossing over is a process of formation of recombinant chromosomes. Chromosomes are the thread like…

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: A researcher is working with a flower species in which red flower color (R) is dominant to white…

A: In genetics , cross are done between selected species having a particular allele combination to…

Q: Three recessive genes are linked on the third chromosome: g (gray), m (micro), and p (plum). The…

A: Parents- Parent 1= +gp=240 (the highest number)  Parent 2= m++=220 (complementary of parent 1)…

Q: A cross in Drosophila melanogaster involved the recessive X-linked genes for white eye (w), yellow…

A: In Drosophila melanogaster , there as three types of genes :  A ) White eye ( w )  B ) Yellow body (…

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:

A: The pigmentation of the eyes of Drosophila melanogaster is due to the synthesis and deposition in…

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

A: Blue colored flowers is because of the A alleles and slate colored flowers result from a alleles; G…

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: Diagnostic ratios Probability Test crossing Forked line diagram Mendelian inheritance H E E Trait…

A: The scientific field of genetics focuses on heredity and the diversity of inherited traits. It deals…

Q: All crosses involve many more than one character. So far, only one character has been examined to…

A: The cross between the two organisms to study the two contrasting characteristics or traits is called…

Q: The predicted outcome of the F1 cross is diagrammed in the Punnett square shown in the figure, where…

A: option (b) 1,2,3 have dark leaves.

Q: y ec +y ec w Determine the order in which th Occur on the chromosome and pr 7.22 A cross involving…

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Q: Two plants in a cross were each heterozygous for two gene pairs (AB /ab) whose loci are linked and…

A: Linkage is an exception to independent assortment. Distance between two genes = recombination…

Q: Given the expected phenotype probability that you determined above, what is the minimum number of…

A: To calculate the expected number of offspring with the AB phenotype, you can use the product rule of…

Q: Total 1900 1. Calculate the recombination frequency between each pair of genes

A: Recombination frequency explains the proportion of recombinant offsprings produced when a cross is…

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

A:

Q: What would be the genotype(s) of F2 offspring that carry recombinant chromosomes? (Note: recombinant…

A:

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: If the genes are not assorting independently, what is the recombinationfrequency between them?

A: Recombinant offspring is the one generated by crossover between linked genes and its frequency can…

Q: black, straight 17 yellow, curved 12 black, curved 337 yellow, straight 364 What is the map distance…

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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 the common daisy, genes A and B control flower color. Both genes have a dominant allele (A or B)…

A: Introduction A genotype is the collection of genes that makes up an individual. When information…

Q: Imagine the white flowers are recessive to purple flowers, and yellow seeds are recessive to green…

A: A mating between two animals that are perfectly hybrid for two features is referred to as a dihybrid…

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: Please explain your choice: Consider an individual with genotype A/a B/b C/c D/d, descended from one…

A: The parent allele are A/A B/B C/C D/D   x   a/a b/b c/c d/d                          F1    →…

Q: The gene that controls the Duffy blood type is D (affected D is dominant to d) and the gene that…

A: D allele encodes duffy blood type and it is dominant over d allele. dd encodes wild type.  L allele…

Q: Given parental genotype aBc/abC, which of the following gametes is/are recombinant?  Choose all that…

A: Recombination event occurs during the prophase-l of meiosis-l. Meiosis is a cell division process by…

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.