Problem Set 3

Problem Set 3 - Anthropology 005 Introduction to Physical...

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Anthropology 005 Introduction to Physical Anthropology 1. To be subject to evolution by natural selection a trait must be transmitted reliably from parent to offspring. A. What is it about the structure of DNA that allows it to be transmitted precisely from one generation to the next? The structure of DNA is that of a double helix, which allows it to be transmitted precisely from one generation to the next. There are two long backbones made of alternating sugar and phosphate molecules. The two strands are held together by hydrogen bonds formed between different pairs of bases. One of four different bases may be connected to each of the sugars (adenine, guanine, cytosine, or thymine). Thymine bonds with adenine and guanine bonds to cytosine. B. Nevertheless, why might a gene have a different effect in an offspring’s body than it did in the parent’s body? Give at least two different reasons. It may depend on the different combinations possible noted in the genotype of the
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This note was uploaded on 04/29/2008 for the course ANTH 5 taught by Professor Gaulin during the Spring '07 term at UCSB.

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Problem Set 3 - Anthropology 005 Introduction to Physical...

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