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Give the name of the phase in which a homologous chromosome breaks apart and begins to pull to opposite ends of the cell.
Construct a Punnet square of the F1 self cross (i.e. F1 x F1). What are the genotypic ratios from this testcross? What are the phenotypic ratios.
A child wonders if she is adopted and hence compares her blood type to those of her parents. Her father is type AB and her mother is type O. What blood type of the child would indicate that she migh
Do cats have a lac operon gene? If not, what organism does have a lac operon gene besides humans.
A brief overview of the debate surrounding genetic food modification, the process by which transgenic organisms are created.
Explain how one media can identify both the selective and differential nature of the organism. Each one identifies different properties of the organism growing on the agar.
Where the letters represent genetic markers and the black dot represents the centromere.
A red kerneled wheat plant is crossed with a white-kerneled plant, yielding an F1 plant with all red kernels. A self-cross yields a 15:1 red:white ratio. A test cross yields a 3:1 red:white ratio. E
For many of the mammalian Hox genes, it has been possible to determine that some of them are more similar to one of the insect HOM-C genes than to the others.
Compared to prokaryotes, the eukaryotic genome is more complex and contains large amounts of noncoding sequences. Describe the process by which eukaryotic promoters are recognized.
The son of a man who does not have Huntington's develops Huntington's after age 50. His son develops Huntington's in his late thirties.
Compare and contrast mutation rate and mutation frequency. Describe the implications for organisms that have long life spans (e.g., humans) and short life spans (e.g., mice). Spontaneous mutation ra
Solve all of these problems using a Punnett Square. If you cannot reproduce the square using software, then you may do them by hand and scan in the image of your solution and submit all images in th
Why do two apparently similar plant lines produce such different results? For each cross depicted in the table, show the genotypes of all parental, F1, and F2 plants. Show the results of a total of
A scientist studying diploid pea plants is interested in two particular traits of the plant: pea color and pea texture. From previous studies, the scientist knows these traits to be genetically unli
Determine where and how similar two 100 Mb DNA sequences are. Assume that similarity will vary over the lengths of the sequences.
Given that Ho = null hypothesis and Ha= alternative hypothesis then consider the following situations.
Using the 11 leading causes of mortality in the United States in 1999 (Lecca, Valentine, & Lyons, 2003, p. 240), what roles do genetics, gene testing, and research play in the progression or ces
What proportion of the yellow progeny produced here would be expected to breed true.
In couples where each person is heterozygous for the sickle-cell gene, there is a probability of 0.25 that any child of the couple will have the disease.
Gregor Mendel discovered that tall was dominant and short recessive in pea plants. When he crossed two plants that were both heterozygous tall.
Researchers have long been asking the question of what causes addictive behavior and why some people feel compelled to keep abusing substances they know are harmful and detrimental to themselves.
Discuss, in detail, the role played by DNA and RNA in genetic diseases. What are the breakthroughs, if any, in the treatment/management of genetic diseases.