The diploid number for a human cell is 46; the chromatid number for a somatic cell at the beginning of G2 would therefore be _____.

A) 4
B) 23
C) 69
D) 92
E) different, depending on the cell type


Answer: D) 92

Biology & Microbiology

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These two molecules are structural isomers. What is the difference between them?

![7458|193x198](upload://ylnRYa6zxgc08Oh8CVSDlL5gggA.jpg) A) the number of carbon atoms B) the number of hydrogen atoms C) the location of a double-bonded oxygen atom D) Only one of them has a double bond between carbon atoms.

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Movement of a chromosomal segment from one chromosome to another nonhomologous chromosome, leading to abnormalities—e.g., Down syndrome.

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Organisms containing DNA from an outside source are called

A. hybrid organisms. B. compound organisms. C. transgenic organisms. D. transcribed organisms. E. plasmid organisms.

Biology & Microbiology