Multiple Choice
Which of the following is NOT a biological factor associated with autism spectrum disorder?
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22. Evolution of Populations
Genetic Variation
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The human genome consists of approximately 3 billion base pairs. If humans typically differ from one another by about 3 million base pairs, what is the nucleotide variability of Homo sapiens?
A
10%
B
1%
C
50%
D
3%
E
0.1%
Verified step by step guidance1
Understand that nucleotide variability refers to the proportion of base pairs that differ between two individuals in a species.
Identify the total number of base pairs in the human genome, which is approximately 3 billion base pairs.
Identify the number of base pairs by which humans typically differ from one another, which is about 3 million base pairs.
Calculate the nucleotide variability by dividing the number of differing base pairs (3 million) by the total number of base pairs (3 billion).
Convert the result into a percentage by multiplying by 100 to find the nucleotide variability percentage.
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