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Q. Science as the process. Eastern tent caterpillars (Malacosoma americanum) live in sizable groups in silk nests, or tents, which they construct in cherry trees. They are among the first insects to become active in the spring, emerging very early in the season-a time while daily temperature fluctuates from freezing to very hot. Observing a colony over the course of a day, you examine striking differences in group behaviour: Early in the morning, the black caterpillars rest in a tightly packed group on the east-facing surface of the tent. In mid afternoon, the group is found on the tent under surface, each caterpillar individually hanging from the tent by just a few of its legs. Suggest a hypothesis to explain this behaviour. How could you test the hypothesis?
Discuss the concept of species. What ways do modern taxonomists use to distinguish different species?
List and describe the factors that can degrade DNA evidence and the precautions required to maintain the reliability of DNA evidence.
What are the T and R forms of hemoglobin? How do they differ in terms of hemoglobin structure during oxygen binding?
Assume that we have a population of three yellow phenotypes, three blue phenotypes, and three green phenotypes. A yellow phenotype then immigrates into the population. What are the genotype and allele frequencies after the immigration?
An existing drug, OLD-STAT, is a competitive inhibitor of an enzyme that is too active in diabetes. The enzyme assay used to test and compare drug candidates is carried out at = 0.15 mM.
What is the estimated frequency of allele a in the gene pool and what proportion of the population is probably heterozygous (Aa) for this trait
Why cant microbes that naturally clean up the environment continue to do so as in the past? How have humans made their task harder? Easier?
Describe the function (role) of each of the following major vegetative tissues in plants: epidermis, cortex, xylem, phloem, pith, mesophyll.
q1. on an autosome genes a and b are 10 map units apart. on the autosome genes c and d are 20 map units apart. an
which of the following structures is the site of sperm maturation?
What is the component of most bacterial cell walls?
In moist temperate environments like New England, most plants are C3 plants. Describe what would happen to plant growth during a long summer drought in Central Massachusetts.
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