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Since at least 1940, evolutionary biologists have fretted that modern life has relaxed selection against deleterious alleles in developed human societies, with potentially dire consequences for the human race.
a) Offer a critique of that argument. In particular, explain what the very-long-term consequences would be.
b) An alternative hypothesis is that the recent orders-of-magnitude increase in human population size will provide a "genetic tune-up" for the human population. This is a decidedly minority opinion. Offer a critique of that argument, and explain whether you find the "dire consequences" or "genetic tune-up" to be more convincing.
Assume y ou are studying a gene, and its effects on skin cells. You want to find out if the protein made encoded by this gene binds to DNA in a particular place
Explain the following statement: “If a high level of Pfr isregenerated by a pulse irradiation with red light in the middle of dark period, this will inhibit flowering in short-day plants and promote flowering in long-day plants.
Setting: It is 5-10 years in the future and you have just been appointed to a highly desirable leadership role, one for which you have been preparing for many years. The organization has strong viability but is currently ineffective due to power stru..
In an experiment, you purify a cysteine-charged tRNA and chemically alter the amino acid attached to it converting it to alanine, the normal protein coded for by the mRNA in the mixture
Discuss the two main classes of T cells and explain how are they distinguished from each other. What are their most important functions.
You are an agricultural geneticist and you suspect that cross-pollination between genetically modified food crops and neighbouring weeds may have led to the spread of a gene for herbicide resistance to wild plants
read the following scenarioas the administrator of a local nursing home you have just received notification that the
An organism with 16 chromosomes per cell is going through mitosis. how many dna molecules are present in a cell undergoing anaphase in mitosis?
the use of pcr and genetic approaches in biotechnology1 define the following terms.a ecotillingb an allelic seriesc
Which of the following occurs as a result of an abundance of tryptophan in E. coli?
Muscles differentiate from which tissues? ectoderm, endoderm,or mesoderm. The distribution of the human population in the United States is?. Population size depends upon?. A population that is growing exponentially in the absence of limiting factors ..
Identify the ways in which telomeres and centromeres are similar. Choose all that apply. A - serve the same functions. B - are packaged into heterochromatin. C - always have the same specific type and distribution of histone modifications. D - are..
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