As a biologist, you complete a test cross between fly offspring to gain information about how two genes interact. You find that 20% of these test cross offspring are parental types and 80% are recombinant types. Which of the following is true based on these results?   a. The alleles of the genes in question did not go through independent assortment   b. The genes in question are likely located on different chromosomes   c. There is a 100% frequency of recombination in this test cross   d. Most of the test cross offspring look like their parents

Q: Consider two loci A and B that are 30 cM apart on chromosome 1 in the fruit fly. A paracentric…

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Q: Which of the following is an explanation for independent assortment of alleles on different…

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Q: You now take an F1 female and cross her to a true-breeding black, wingless male. What is his…

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Q: Fruit flies are very useful model organisms that have been used to study genetics. One mutant…

A: An eyeless fruit fly is represented by ey gene which is a recessive gene. Homozygous normal fly is…

Q: Suppose that you have 72 F2 flies from a cross, and expected that they would show a phenotype ratio…

A: This 9:3:3:1 phenotypic ratio is the classic Mendelian ratio for a dihybrid cross in which the…

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A: The union of male and female gametes and/or nuclei from the same haploid, diploid, or polyploid…

Q: Create a chromosome map each set of three genes from the given information.  a) The crossover…

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Q: You have been tasked by a pharmaceutical company to generate a novel strain of Cannabis sativa for…

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Q: What can you assert regarding cytoplasmic inherited traits? A. extensive phenotypic variation…

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Q: Consider three genes on the same chromosome, Gene A, Gene B and Gene C. You perform three factor…

A: As 3 genes are located on the same chromosome then the crossing over event is very rare.

Q: You collected the following results from a test-cross you set-up using fruit flies. 52 wildtype…

A: Fruit flies ( Drosophila ) are test crossed with each other .  Results obtained are :-  A ) Wild…

Q: phenotypes: 42 MP; 374 Mp; 367 mP; 27 mp.  What can you conclude from these data

A: Recombinant offspring are children that have a different allele combination to their parents.

Q: Suppose researchers studied the first chromosome of a new species and mapped three genes of…

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A: Part B. A true breeding gold fish with long curly tail is crossed with a true breeding gold fish…

Q: What is/are the phenotypes of the recombinant offspring of the F2generation?a. red eyes, long…

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Q: In the diagram in the box below the horizontal line represents a chromosome and A, B, C, D and E…

A: Recombination is the formation of new combinations of genes, this result in formation of new…

Q: You observe that 50% of the offspring of a two-locus mapping cross are recombinant.  You could…

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Q: During a dihybrid cross involving two linked genes (two-point testcross), 20 flies showed…

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Q: I am studying a pair of genes, A and B, that I think are both located on the same chromosome.  After…

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Q: You are doing a genetics experiment with Drosophlia melanogaster, the fruit fly. In the "P"…

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

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Q: b. This cross yields the progeny of the following phenotypes. Write the genotype of each progeny…

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

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Q: Genes exist in pairs in individuals; during the production of gametes, the pairs are separated so…

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Q: Which of the following best describes the concept of independent assortment? Group of answer choices…

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Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.