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Life cycle of a fern scenario: Hybrid 1- the sperm in the antheridium has 8 chromosomes; dominant gene 'A' is on one of the chromosomes that produce large sporophyte fronds. Hybrid 2 - egg has 8 chromosomes with recessive gene 'a' that produces small sporophyte fronds. If fertilization took place between both hybrids, how many chromosomes would there be and what would be the genotypes of resulting structures in the fern's life cycle?
Explain two ways in which a change in a DNA molecule could lead to the emergence of a constitutive mutant. How could these two types of constitutive mutants be distinguished genetically.
Explain the two consecutive splicing steps that result in removal of introns. Splicing fidelity relies on specific recognition of introns by the splicing machinery.
You decide to climb Mt Everest and someone tells you it takes 2-months. Estimate the number of times you would stop and explain why you need to acclimatize. Describe all the physical effects on your body and the dangers.
Cathy wishes to undergo maternal serum screening. She is also strongly opposed to abortion. A friends argues that she is inconsistent. Is her friend right?
Compare the spliceosome to the ribosome. What general features do they share in terms of their structure, their components, and their activity? How do they differ?
Phosphonylation, a chemical surface treatment, has been proposed as a means of increasing the hydrophilicity of LDPE, and therefore increase its lubricity and reduce vascular tissue damage.
Rotifer females will often produce clones of themselves when environmental conditions are good. Which of the following best describes this reproductive strategy.
which one restriction enzyme satisfies all three of the requirements listed below? - bamHI only - ECori Only - Hae III only - HindIII only - bamHI and Ecori - bamHI and Hae III - bamHI , Ecori, and Have III -
Wing coloration in the scarlet tiger moth has previously been shown to behave as a single locus, two allele system with incomplete dominance.
What are some potential research questions that would be interesting to ask of the species prepare a hypothesis and an experiment to test your hypothesis.
Why could prokaryotes quickly reinfect a patient if they are not wiped out? How may this result in the evolution of drug-resistant pathogens.
Compared to impact craters on other moons, young impact craters on Europa (including the Pwyll impact crater) show a distinct absence of high crater walls, or any significant depression towards the center. What does this suggest about Europa's icy..
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