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What is the difference between cell cycle and cell division.
Why would it be advantageous for an organism to be diploid? Why would it be advantageous for a diploid organism to produce haploid gametes in order to reproduce itself? Why would a geneticist be at
Is it best to wait and cross the male fly with another fly of its own kind or cross it immediately with a fly that does not have the characteristic.
As we move closer to the day when genetic screening and engineering become commonplace, many scientists are raising concerns about the social, ethical, and political implications of this genetic rev
In tomatoes, red fruit (R) is dominant to yellow fruit (r). A homozygous red-fruited plant is bred to a yellow-fruited plant.
Given what you know about genetically modified organisms (GMOs), identify some of the costs and benefits associated with GMO crops.
Could you please help me with an outline for 3 essay questions? I need a peer-reviewed article and points of interest for each of the following topics.
Discuss why humans not evolve with one central repository of DNA rather than having it replicated throughout the body.
Perhaps you and/or your significant other is a carrier of a harmful recessive trait, such as cystic fibrosis. What would you do when considering having children? Would you hope for the best and igno
DNA and RNA are similar yet distinct components of the cell. Describe three differences between RNA and DNA with respect to their chemical composition and structure. Provide a detailed description o
If a population consists of 122 individuals, how many alleles are present in the population.
A cell of E. coli contains about 10-14 g if DNA. A DNA strand (modelled as a cylinder) is 20 Å in diameter and has a mass of about 2 x 10^6 daltons for each µ m of length. What fraction
What is the difference between a cDNA and a genomic library.
In an organism, a cross was made between females expressing three X-linked recessive traits: (a) green eyes, (b) blue body, and (c) long hair (abc/abc), and wild-type (+ + +/Y) males.
The production of the purple pigment anthocyanin in flowers is accomplished via a biosynthetic pathway.
Genetically speaking, brown eyes (B-) are dominant to blue eyes (bb). However, an individual can wear colored contacts in order to change his or her eye phenotype.
Vanessa has obtained two true-breeding strains of mice, each homozygous for an independently discovered recessive mutation that prevents the formation of hair on the body.
The following table contains statements pertaining to Hfr, F+, F', and/or F- strains of bacteria. Indicate in respective boxes if the statements apply to each category by putting Hfr, F+, F', F- bes
Several Hfr strains derived from the same F+ strain donate the following genes to an F- strain in the order given.
The Ames test is used to determine if an external agent (such as a chemical) can act as a mutagen. In this test, several different his- strains of Salmonella typhimurium are used.
The following list are several types of mutations that could occur in a proto-oncogene or a tumor-suppressor gene. Some of these mutations may increase the rate of progression through the cell cycle
Draw the pedigree according to the standard format.
If female vampires are venomous, male vampires are venomous, and Nahuel (a Male hybrid vampire) is venomous, why are all known female vampire hybrids not venomous? Is being venomous a sex-linked tra
Why do scientist have to synthesize cDNA from cells and how do cDNA get generated.
If the F1 progeny of two purebred organisms (DDEE X ddee) were testcrossed, give the expected genotypes of the progeny, assuming independent assortment. Show your work.