Nile blue is used to test for the presence of amino acids
a. True
b. False
b
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Humans have how many pairs of chromosomes?
a. 15 b. 23 c. 46 d. 94
In __________ speciation, a geographic barrier
interrupts gene flow between populations. Fill in the blank(s) with the appropriate word(s).
Suppose that the dinucleotide in the accompanying figure were cleaved with the enzyme spleen diesterase, which breaks the covalent bond connecting the phosphate to C-5'
After such cleavage, to which nucleoside is the phosphate now attached?
An oncologist (a physician who specializes in cancer) compares two biopsy samples by looking at the percentage of cells in mitosis. Sample 1 has 15% of cells in mitosis, and sample 2 has 8% of cells in mitosis
These samples are of the same tissue type. Which sample is likely to be cancerous, and why? Why is it important that the two samples being compared came from the same tissue type?