Natural selection is random
a. True
b. False
Indicate whether the statement is true or false
False
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A study of the human gut performed in 1982 used various types of plates under different growth conditions to describe and enumerate the microbes in the human gut. They concluded that the majority of the microbes in the human gut are Gammaproteobacteria
A study conducted in 2010 using next-generation sequencing to characterize 16S rRNA sequences concluded that the majority of the microbes in the human gut are Firmicutes and Bacteriodetes. Why did these studies have different conclusions? Which study do you think is most accurate? What will be an ideal response?
What is the area of skin between the vaginal opening and the anus is called?
A. Hymen B. Endometrium C. Areola D. Perineum
The alkylating agent nitrosoguanidine adds methyl groups to nucleotide bases and is repaired by which enzyme that removes the added methyl group and restores nucleotides to their normal form?
What will be an ideal response?
Which of the following bacteria is both photosynthetic and Gram-positive?
A. Cyanobacteria B. Heliobacteria C. Green bacteria D. Purple bacteria E. None of the choices are correct.