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1a. Does the gymnosperm embryo use the same nutritive tissue in development that the angiosperm does? Explain.
1b. What further adaptations have gymnosperms made for life on land when compared with the ferns?
What are the consequences of having pyrimidine dimers in DNA.
A set of Mendelian crosses involving two traits is performed. The first cross is between a plant with green and wrinkled seeds and a plant with yellow and smooth seeds.
Industrial melanism refers to the dark pigmentation that evolved in some insects giving them protective coloration on vegetation darkened by soot in heavily industrialized areas prior to air pollution regulation.
T.J. and Tyler were building a tree-house. While searching for a board in a pile of used lumber, T.J. stepped on a rusty nail that penetrated deep into his foot, causing it to bleed.
Recent evidence shows that the individual chromosomes occupy fairly defined territories within the nucleus. Given the structure and location of parts of the nucleus, which would be more probably involved in chromosome location.
Assume you identify a recessive mutation in the AP endonuclease in yeast. During the diploid phase of their lifecycle, the yeast are viable but haploid strains die rapidly.
How does real time PCR work to quantify the initial amount of the DNA template? How should the method be modified to quantify the initial amount of RNA template extracted from tissue or cells?
Refer to your textbook for more detailed data about the layers of human skin. Indicate whether each of the following structures is found in the epidermis, dermis, or subcutaneous layer.
A patient has esophageal cancer and should have a feeding tube inserted. The nurse tells the patient that the tube will be inserted surgically into the duodenum. The wife asks why the tube will not be inserted into the stomach directly.
The -10 and -35 sequences in bacterial promoters are separated by about two turns of the DNA double helix (remember genetics?). How do you think transcription would be affected if the deletion were introduced such that the -35 sequence was moved to -..
Genetic diversity is necessary for natural selection to act, but natural selection can decrease or eliminate diversity. What procedure can restore genetic diversity to a population.
determine the genotypes of the two parents: A) a walnut crossed with a single produces offspring that are ¼ walnut, ¼ rose, ¼ pea, and ¼ single.
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