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Assume an animal has a diploid number of 18, with DNA content of 39 ng. A. What is the DNA content (in ng) in the G1 and the G2 stage of the cell cycle? B. At what stage(s) of interphase are sister chromatids observed?
For seedless vascular plants create a homosporous and heterosporous life cycle of a plant. Also label what structures are haploid and which are diploid as well as when meiosis and fertilization occur.
Clostridium and Streptococcus are both catalase-negative. Streptococcus grows by fermentation. Why is Clostridium killed by oxygen, whereas Streptococcus is not.
If these three genes were all assorting independently, how many genotypic and phenotypic classes would result in the offspring, and in what proportion, suppose simple dominance and recessiveness in each gene pair?
Osmotic balance is critical for fishes to maintain, particularly those that move between waters with differing concentration gradients of solutes, particularly salts.
Compute the allelic and genotypic frequencies for the disease assuming Hardy?Weinberg equilibrium. Show your work and express your answer to three significant figures.
By this time, 35 cells of V. vulnificus have gotten into your blood. However, the doxycycline does slow the growth of the bacteria considerably to a generation time of twelve hours.
5-different mutations were derived from base pair substitutions at a single codon. In this codon, the mutant alleles had arginine, leucine.
A mammal uses only 1 to 2 percent of its energy in ventilation while a fish must spend about 15 percent of its energy to move water over its gills. Describe this huge difference in their efforts to collect oxygen.
What is most important evolutionary force acting between this generation and the next affecting the genetic composition of the populations?
Aspirin has a pH of three. Some people who take large amounts of aspirin (for example, for arthritis) take a pill that combines aspirin with Maalox. What is the reason for this combination.
Cross a wildtype female with a yellow bodied male to generate an f1 offspring generation. Which allele is domonant and which is recessive. Justify your responce using your results.
Why did the successful cloning of Dolly the sheep support the idea that the differentiation of different cell types observed in development is orchestrated by gene regulation.
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