Imagine that the genes for seed color and seed shape are located on the same chromosome. A cross is made between two true-breeding plants.  One plant produces green wrinkled seed (rryy) and the second parent produced round yellow seeds (RRYY). A test cross is made between the F1 generation with the following results: green, wrinkled          645 green round               36 yellow wrinkled          29 yellow round              590 a) Draw the chromosomes of parents and four types of offsprings and show the recombinant and non-recombinants in the offsprings. b)  What is the recombination frequency between two loci?

Q: Write the genotype and phenotype that would be expected from this cross.  Write the genotype and…

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

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Q: A cross is made between BbCc and bbcc plants and the offspring occur in the following numbers: 98…

A: When the two genes are linked, they are present on the same chromosome. Because recombination, i.e…

Q: Consider the following dihybrid testcross: B/b • E/e  ×  b/b • e/e For the progeny from this…

A: If the genes are completely linked, then only parental progenies will be formed. If the genes show…

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: Two pure-breeding strains of flies are mated, and the F1 are intercrossed.  The first strain has…

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Q: Consider the following Test Cross results & chromosome map:    Test Cross Progeny 525 A   B  C…

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

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

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

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A: Mendel's principle of independent assortment states that a dihybrid cross with unlinked markers…

Q: Consider Cyclic Crossover on two Parent chromosomes: Parent1 = A0846172593B and Parent2 =…

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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.