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A cross between plants with red flowers and plants with white flowers produces plants with pink flowers. If two of these pink-flowered plants are crossed, what is the chance that pink-flowered plant
A woman referred to as individual A marries a man, individual B. Both have normal color vision. They have 3 children. Child AB1 is a son with normal color vision.
If for each species a lizard that was homozygous for the dark Mc1r allele had been crossed with a lizard that was homozygous for the light Mc1r allele the resulting F1 generation would have obtained
In human beings, the gene for red green colorblindness (r) is sex linked and recessive to its allele for normal vision (R), while the gene for freckles (F) is autosomal and dominant over its allele
Consider a strand of DNA with the sequence GAATTCGGCA. What is the sequence of the complementary strand.
How does RNA interference regulate gene expression.
Two mothers give birth to sons at the same time in a busy urban hospital. The son of couple #1 is afflicted with hemophilia A. Neither parent has the disease.
Sickle-cell disease results from a point mutation in the second nucleotide of the codon GAA, changing it to GUA. This results in a change in the amino acid.
A farmer breeds a champion bull with a good quality cow of the same breed.
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