Which technique separates nucleic acids (DNA and RNA) by molecular weight?

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#Question id: 17669

#Unit 9. Diversity of Life Forms

Use the letters A-D to label where on the phylogenetic tree each of the following derived characters appeared. 

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#Question id: 17670

#Unit 9. Diversity of Life Forms

The following are common to both charophytes and land plants except 

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#Question id: 17671

#Unit 9. Diversity of Life Forms

Protection from predators 

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#Question id: 17672

#Unit 9. Diversity of Life Forms

Protection from desiccation

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#Question id: 17673

#Unit 9. Diversity of Life Forms

transport of water, minerals, and nutrients 

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#Question id: 17674

#Unit 8. Inheritance Biology

In humans, albinism (unpigmented skin, hair, and eyes) is due to an enzymatic deficiency, and it is an autosomal recessive trait. Suppose that in a small country of one million people (“Generation 1”), there are 500 aa albinos and 9000 Aa heterozygous carriers. Has the frequency of allele a changed between Generations 1 and 2?