Based on the results of the presumptive test of the Bacterial Examination of Water exercise, match the following:
Drinking fountain sample
A) 0.43 most probable number of bacteria per gram/ml
B) 4.6 most probable number of bacteria per gram/ml
C) 0.061 most probable number of bacteria per gram/ml
C) 0.061 most probable number of bacteria per gram/ml
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Which statement about DNA methylation is true?
a. DNA methylation is limited to the original cell and cannot be inherited by offspring. b. DNA methylation promotes transcription by unwinding DNA from histone proteins. c. DNA methylation occurs in CpG islands located within the promoter region of genes. d. DNA methylation always results in genes that are silenced and inactive.
For natural selection to occur, what must be present in a population?
a. genetic drift b. gene flow c. decent with modification d. variation
A group of individuals born in the same period of time is called a(n) ________
Fill in the blank(s) with correct word
cohesion-tension theory
What will be an ideal response?