DNA and Evolution

The shape of the DNA molecule is a double __________________?

• S

• helix

• rope

• curve

Rosalind Franklin's "photo 51" was critical in helping Watson and Crick to discover what?

• The double helix structure of DNA

• X-Ray crystalography was a technology worth looking in to. 

• That stealing is a great way to get ahead in life

• That there could possibly be life on other planets. 

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A chromosome is made of coiled up ___________.

• cells

• nuclei

• DNA

Little pieces of DNA that code for our traits are called

• cells

• chromosomes

• genes

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Which of the following describes what is meant by Natural Selection?

• An organism will survive no matter what its adaptations may be

• An organism with adaptations that do not allow it to reproduce as effectively as others will survive.

• An organism with adaptations that allow it to obtain resources and reproduce more effectively than others will survive.

• No organisms will survive.

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What are the x-shaped objects called inside of the nucleus of a cell?

• genes

• DNA

• chromosomes

• cocodrilo peludo que sonríe

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Mutations are a source of variations.

• True

• False

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Over time natural selection can change how often a trait is seen within a population.

• True

• False

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What was the variation in the Peppered Moth that affected their survival?

• Size

• Aggressiveness

• Color

• Species

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What is the process in which populations CHANGE over time?

• evolution

• species

• variation

• competition

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